v2 flexible database location

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David Bremner-2 David Bremner-2
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v2 flexible database location

This is series 2 of 3 revamping configuration. It obsoletes [1].


The first 4 patches are really unfinished business from the the first
series already merged to master.  They bring merged configuration (no
more "Defined in Database") to notmuch-show (leaving only
notmuch-config and notmuch-setup to be updated).

[PATCH 01/21] lib: publish API for notmuch_database_reopen
[PATCH 02/21] lib: save path of xapian database in notmuch struct.
[PATCH 03/21] lib: support reopening databases for write access.
[PATCH 04/21] CLI/show: complete conversion to new configuration

The next 8 patches also form a logical unit, since they provide (with some
manual moving of files around) support for reading and updating
databases in locations other than the mail root.

[PATCH 05/21] lib/open: support NOTMUCH_DATABASE environment variable
[PATCH 06/21] lib/open: allocate notmuch_t struct early
[PATCH 07/21] lib: remove "path" from notmuch struct
[PATCH 08/21] lib/open: factor out library initialization
[PATCH 09/21] lib/open: reuse directory checks from n_d_c_with_config
[PATCH 10/21] lib/open: factor out the second half of
[PATCH 11/21] lib/open: use _finish_open in n_d_create_with_config
[PATCH 12/21] lib/open: Use check for existing database by trial
[PATCH 13/21] support splitting mail from database location.

The 14 and 16 provide XDG location support for the database


Finally some of the CLI commands need updating, particularly those
that create databases or add messages.


A (lightly edited) diff from the previous version follows

diff --git a/doc/man1/notmuch-config.rst b/doc/man1/notmuch-config.rst
index ec8c10d5..99030a41 100644
--- a/doc/man1/notmuch-config.rst
+++ b/doc/man1/notmuch-config.rst
@@ -56,7 +56,7 @@ The available configuration items are described below.
     History: this configuration value was introduced in notmuch 0.32.
 
     Default: For compatibility with older configurations, the value of
-    database.path is used if database.mail\_root is unset..
+    database.path is used if database.mail\_root is unset.
 
 **database.hook_dir**
 
diff --git a/lib/config.cc b/lib/config.cc
index 44d546db..32ed6f8f 100644
--- a/lib/config.cc
+++ b/lib/config.cc
@@ -394,6 +394,8 @@ _notmuch_config_key_to_string (notmuch_config_key_t key) {
  return "database.mail_root";
     case NOTMUCH_CONFIG_HOOK_DIR:
  return "database.hook_dir";
+    case NOTMUCH_CONFIG_BACKUP_DIR:
+ return "database.backup_dir";
     case NOTMUCH_CONFIG_EXCLUDE_TAGS:
  return "search.exclude_tags";
     case NOTMUCH_CONFIG_NEW_TAGS:
@@ -436,6 +438,7 @@ _notmuch_config_default (notmuch_database_t *notmuch, notmuch_config_key_t key)
     case NOTMUCH_CONFIG_SYNC_MAILDIR_FLAGS:
  return "true";
     case NOTMUCH_CONFIG_HOOK_DIR:
+    case NOTMUCH_CONFIG_BACKUP_DIR:
     case NOTMUCH_CONFIG_NEW_IGNORE:
     case NOTMUCH_CONFIG_USER_NAME:
     case NOTMUCH_CONFIG_PRIMARY_EMAIL:
@@ -479,7 +482,7 @@ notmuch_config_set (notmuch_database_t *notmuch, notmuch_config_key_t key, const
 void
 _notmuch_config_cache (notmuch_database_t *notmuch, notmuch_config_key_t key, const char *val) {
     if (notmuch->config == NULL)
- notmuch->config = _notmuch_string_map_create (notmuch);
+       notmuch->config = _notmuch_string_map_create (notmuch);
 
     _notmuch_string_map_set (notmuch->config, _notmuch_config_key_to_string (key), val);
 }
diff --git a/lib/notmuch-private.h b/lib/notmuch-private.h
index ecad87a6..f871756d 100644
--- a/lib/notmuch-private.h
+++ b/lib/notmuch-private.h
@@ -76,7 +76,7 @@ NOTMUCH_BEGIN_DECLS
 #define NOTMUCH_CLEAR_BIT(valp,  bit) \
     (_NOTMUCH_VALID_BIT (bit) ? (*(valp) &= ~(1ull << (bit))) : *(valp))
 
-#define unused(x) x __attribute__ ((unused))
+#define unused(x) x ## _unused __attribute__ ((unused))
 
 /* Thanks to Andrew Tridgell's (SAMBA's) talloc for this definition of
  * unlikely. The talloc source code comes to us via the GNU LGPL v. 3.
diff --git a/lib/notmuch.h b/lib/notmuch.h
index 8fcd3eed..5e4f1dac 100644
--- a/lib/notmuch.h
+++ b/lib/notmuch.h
@@ -882,6 +882,12 @@ notmuch_database_get_all_tags (notmuch_database_t *db);
 /**
  * Reopen an open notmuch database.
  *
+ * @param [in] db open notmuch database
+ * @param [in] mode mode (read only or read-write) for reopened database.
+ *
+ * @retval #NOTMUCH_STATUS_SUCCESS
+ * @retval #NOTMUCH_STATUS_ILLEGAL_ARGUMENT The passed database was not open.
+ * @retval #NOTMUCH_STATUS_XAPIAN_EXCEPTION A Xapian exception occured
  */
 notmuch_status_t
 notmuch_database_reopen (notmuch_database_t *db, notmuch_database_mode_t mode);
@@ -2469,6 +2475,7 @@ typedef enum _notmuch_config_key {
     NOTMUCH_CONFIG_DATABASE_PATH = NOTMUCH_CONFIG_FIRST,
     NOTMUCH_CONFIG_MAIL_ROOT,
     NOTMUCH_CONFIG_HOOK_DIR,
+    NOTMUCH_CONFIG_BACKUP_DIR,
     NOTMUCH_CONFIG_EXCLUDE_TAGS,
     NOTMUCH_CONFIG_NEW_TAGS,
     NOTMUCH_CONFIG_NEW_IGNORE,
diff --git a/lib/open.cc b/lib/open.cc
index 2311d4a0..e5ef351e 100644
--- a/lib/open.cc
+++ b/lib/open.cc
@@ -1,4 +1,6 @@
 #include <unistd.h>
+#include <libgen.h>
+
 #include "database-private.h"
 #include "parse-time-vrp.h"
 
@@ -69,39 +71,43 @@ _xdg_dir (void *ctx,
 }
 
 static notmuch_status_t
-_choose_hook_dir (notmuch_database_t *notmuch,
-  const char *profile,
-  char **message)
+_choose_dir (notmuch_database_t *notmuch,
+     const char *profile,
+     notmuch_config_key_t key,
+     const char *xdg_var,
+     const char *xdg_subdir,
+     const char *subdir,
+     char **message = NULL)
 {
-    const char *config;
-    const char *hook_dir;
+    const char *parent;
+    const char *dir;
     struct stat st;
     int err;
 
-    hook_dir = notmuch_config_get (notmuch, NOTMUCH_CONFIG_HOOK_DIR);
+    dir = notmuch_config_get (notmuch, key);
 
-    if (hook_dir)
+    if (dir)
  return NOTMUCH_STATUS_SUCCESS;
 
-    config = _xdg_dir (notmuch, "XDG_CONFIG_HOME", ".config", profile);
-    if (! config)
+    parent = _xdg_dir (notmuch, xdg_var, xdg_subdir, profile);
+    if (! parent)
  return  NOTMUCH_STATUS_PATH_ERROR;
 
-    hook_dir = talloc_asprintf (notmuch, "%s/hooks", config);
+    dir = talloc_asprintf (notmuch, "%s/%s", parent, subdir);
 
-    err = stat (hook_dir, &st);
+    err = stat (dir, &st);
     if (err) {
  if (errno == ENOENT) {
-    const char *database_path = notmuch_database_get_path (notmuch);
-    hook_dir = talloc_asprintf (notmuch, "%s/.notmuch/hooks", database_path);
+    char *notmuch_path = dirname (talloc_strdup (notmuch, notmuch->xapian_path));
+            dir = talloc_asprintf (notmuch, "%s/%s", notmuch_path, subdir);
  } else {
     IGNORE_RESULT (asprintf (message, "Error: Cannot stat %s: %s.\n",
-     hook_dir, strerror (errno)));
+     dir, strerror (errno)));
     return NOTMUCH_STATUS_FILE_ERROR;
  }
     }
 
-    _notmuch_config_cache (notmuch, NOTMUCH_CONFIG_HOOK_DIR, hook_dir);
+    _notmuch_config_cache (notmuch, key, dir);
 
     return NOTMUCH_STATUS_SUCCESS;
 }
@@ -245,7 +251,7 @@ _trial_open (const char *xapian_path, char **message_ptr)
  IGNORE_RESULT (asprintf (message_ptr,
  "A Xapian exception occurred opening database: %s\n",
  error.get_msg ().c_str ()));
-       return NOTMUCH_STATUS_XAPIAN_EXCEPTION;
+ return NOTMUCH_STATUS_XAPIAN_EXCEPTION;
     }
     return NOTMUCH_STATUS_SUCCESS;
 }
@@ -278,6 +284,16 @@ _notmuch_choose_xapian_path (void *ctx, const char *database_path, const char **
     return status;
 }
 
+static void
+_set_database_path (notmuch_database_t *notmuch,
+          const char *database_path) {
+    char *path=talloc_strdup (notmuch, database_path);
+
+    strip_trailing (path, '/');
+
+    _notmuch_config_cache (notmuch, NOTMUCH_CONFIG_DATABASE_PATH, path);
+}
+
 static void _init_libs () {
 
     static int initialized = 0;
@@ -401,10 +417,23 @@ _finish_open (notmuch_database_t *notmuch,
  if (status)
     goto DONE;
 
- status = _choose_hook_dir (notmuch, profile, &message);
+ status = _choose_dir (notmuch, profile,
+      NOTMUCH_CONFIG_HOOK_DIR,
+      "XDG_CONFIG_HOME",
+      ".config",
+      "hooks",
+      &message);
  if (status)
     goto DONE;
 
+ status = _choose_dir (notmuch, profile,
+      NOTMUCH_CONFIG_BACKUP_DIR,
+      "XDG_DATA_HOME",
+      ".local/share",
+      "backups",
+      &message);
+        if (status)
+            goto DONE;
  status = _notmuch_config_load_defaults (notmuch);
  if (status)
     goto DONE;
@@ -430,21 +459,11 @@ _finish_open (notmuch_database_t *notmuch,
     return status;
 }
 
-static void
-_set_database_path (notmuch_database_t *notmuch,
-   const char *database_path) {
-    char *path=talloc_strdup (notmuch, database_path);
-
-    strip_trailing (path, '/');
-
-    _notmuch_config_cache (notmuch, NOTMUCH_CONFIG_DATABASE_PATH, path);
-}
-
 notmuch_status_t
 notmuch_database_open_with_config (const char *database_path,
    notmuch_database_mode_t mode,
    const char *config_path,
-   unused(const char *profile),
+   const char *profile,
    notmuch_database_t **database,
    char **status_string)
 {
@@ -542,6 +561,8 @@ notmuch_database_create_with_config (const char *database_path,
     int err;
     bool split = false;
 
+    _init_libs ();
+
     notmuch = _alloc_notmuch ();
     if (! notmuch) {
  status = NOTMUCH_STATUS_OUT_OF_MEMORY;
@@ -560,9 +581,14 @@ notmuch_database_create_with_config (const char *database_path,
     _set_database_path (notmuch, database_path);
 
     if (key_file && !split) {
- const char *mail_root = g_key_file_get_value (key_file, "database", "mail_root", NULL);
- /* XXX compare canonicalized versions */
- split = (mail_root && (0 != strcmp (mail_root, database_path)));
+ char *mail_root = canonicalize_file_name (
+    g_key_file_get_value (key_file, "database", "mail_root", NULL));
+ char *db_path = canonicalize_file_name (database_path);
+
+ split = (mail_root && (0 != strcmp (mail_root, db_path)));
+
+ free(mail_root);
+ free (db_path);
     }
 
     if (split) {
@@ -587,11 +613,20 @@ notmuch_database_create_with_config (const char *database_path,
     goto DONE;
  }
     }
+
     if (! (notmuch->xapian_path = talloc_asprintf (notmuch, "%s/%s", notmuch_path, "xapian"))) {
  status = NOTMUCH_STATUS_OUT_OF_MEMORY;
  goto DONE;
     }
 
+    status = _trial_open (notmuch->xapian_path, &message);
+    if (status == NOTMUCH_STATUS_SUCCESS) {
+ notmuch_database_destroy (notmuch);
+ notmuch = NULL;
+ status = NOTMUCH_STATUS_DATABASE_EXISTS;
+ goto DONE;
+    }
+
     status = _finish_open (notmuch,
    profile,
    NOTMUCH_DATABASE_MODE_READ_WRITE,
@@ -633,6 +668,11 @@ notmuch_database_reopen (notmuch_database_t *notmuch,
  notmuch_database_mode_t new_mode)
 {
     notmuch_database_mode_t cur_mode = _notmuch_database_mode (notmuch);
+    if (notmuch->xapian_db == NULL) {
+ _notmuch_database_log (notmuch, "Cannot reopen closed or nonexistent database\n");
+ return NOTMUCH_STATUS_ILLEGAL_ARGUMENT;
+    }
+
     try {
  if (cur_mode == new_mode &&
     new_mode == NOTMUCH_DATABASE_MODE_READ_ONLY) {
@@ -664,6 +704,6 @@ notmuch_database_reopen (notmuch_database_t *notmuch,
     }
 
     notmuch->view++;
+    notmuch->open = true;
     return NOTMUCH_STATUS_SUCCESS;
 }
-
diff --git a/notmuch-new.c b/notmuch-new.c
index 63ac10a6..8a8ff69a 100644
--- a/notmuch-new.c
+++ b/notmuch-new.c
@@ -1048,28 +1048,22 @@ _maybe_upgrade (notmuch_database_t *notmuch, add_files_state_t *state) {
     if (notmuch_database_needs_upgrade (notmuch)) {
  time_t now = time (NULL);
  struct tm *gm_time = gmtime (&now);
- struct stat st;
  int err;
  notmuch_status_t status;
- char *dot_notmuch_path = talloc_asprintf (notmuch, "%s/%s", state->db_path, ".notmuch");
-
+ const char *backup_dir = notmuch_config_get (notmuch, NOTMUCH_CONFIG_BACKUP_DIR);
  const char *backup_name;
 
- err = stat(dot_notmuch_path, &st);
- if (err) {
-    if (errno == ENOENT) {
- dot_notmuch_path = NULL;
-    } else {
- fprintf(stderr, "Failed to stat %s: %s\n", dot_notmuch_path, strerror(errno));
- return EXIT_FAILURE;
-    }
+ err = mkdir (backup_dir, 0755);
+ if (err && errno != EEXIST) {
+    fprintf(stderr, "Failed to create %s: %s\n", backup_dir, strerror(errno));
+    return EXIT_FAILURE;
  }
 
  /* since dump files are written atomically, the amount of
  * harm from overwriting one within a second seems
  * relatively small. */
  backup_name = talloc_asprintf (notmuch, "%s/dump-%04d%02d%02dT%02d%02d%02d.gz",
-       dot_notmuch_path ? dot_notmuch_path : state->db_path,
+       backup_dir,
        gm_time->tm_year + 1900,
        gm_time->tm_mon + 1,
        gm_time->tm_mday,
diff --git a/test/T055-path-config.sh b/test/T055-path-config.sh
index 44572695..d8828342 100755
--- a/test/T055-path-config.sh
+++ b/test/T055-path-config.sh
@@ -2,6 +2,8 @@
 test_description='Configuration of mail-root and database path'
 . $(dirname "$0")/test-lib.sh || exit 1
 
+test_require_external_prereq xapian-metdata
+
 backup_config () {
     local test_name=$(basename $0 .sh)
     cp ${NOTMUCH_CONFIG} notmuch-config-backup.${test_name}
@@ -13,6 +15,7 @@ restore_config () {
     unset CONFIG_PATH
     unset DATABASE_PATH
     unset NOTMUCH_PROFILE
+    unset XAPIAN_PATH
     cp notmuch-config-backup.${test_name} ${NOTMUCH_CONFIG}
 }
 
@@ -25,6 +28,18 @@ split_config () {
     notmuch config set database.path $dir
     notmuch config set database.mail_root $MAIL_DIR
     DATABASE_PATH=$dir
+    XAPIAN_PATH="$dir/xapian"
+}
+
+symlink_config () {
+    local dir
+    backup_config
+    dir="$TMP_DIRECTORY/link.$test_count"
+    ln -s $MAIL_DIR $dir
+    notmuch config set database.path $dir
+    notmuch config set database.mail_root $MAIL_DIR
+    XAPIAN_PATH="$MAIL_DIR/.notmuch/xapian"
+    unset DATABASE_PATH
 }
 
 xdg_config () {
@@ -46,21 +61,19 @@ xdg_config () {
     mv ${NOTMUCH_CONFIG} $CONFIG_PATH
     unset NOTMUCH_CONFIG
 
+    XAPIAN_PATH="${DATABASE_PATH}/xapian"
     notmuch --config=${CONFIG_PATH} config set database.mail_root ${TMP_DIRECTORY}/mail
     notmuch --config=${CONFIG_PATH} config set database.path
 }
 
-for config in traditional split+prefix split XDG XDG+profile; do
+for config in traditional split XDG XDG+profile symlink; do
     #start each set of tests with an known set of messages
     add_email_corpus
 
     case $config in
  traditional)
     backup_config
-    ;;
- split+prefix)
-    split_config
-    mv mail/.notmuch $DATABASE_PATH
+    XAPIAN_PATH="$MAIL_DIR/.notmuch/xapian"
     ;;
  split)
     split_config
@@ -74,6 +87,9 @@ for config in traditional split+prefix split XDG XDG+profile; do
     xdg_config ${RANDOM}
     mv mail/.notmuch/xapian $DATABASE_PATH
     ;;
+ symlink)
+    symlink_config
+    ;;
     esac
 
     test_begin_subtest "count ($config)"
@@ -87,6 +103,40 @@ for config in traditional split+prefix split XDG XDG+profile; do
     notmuch tag -$tag '*'
     test_expect_equal "$output" '52'
 
+    test_begin_subtest "address ($config)"
+    notmuch address --deduplicate=no --sort=newest-first --output=sender --output=recipients path:foo >OUTPUT
+    cat <<EOF >EXPECTED
+Carl Worth <[hidden email]>
+[hidden email]
+EOF
+    test_expect_equal_file EXPECTED OUTPUT
+
+    test_begin_subtest "dump ($config)"
+    notmuch dump is:attachment and is:signed | sort > OUTPUT
+    cat <<EOF > EXPECTED
+#notmuch-dump batch-tag:3 config,properties,tags
++attachment +inbox +signed +unread -- id:[hidden email]
++attachment +inbox +signed +unread -- id:[hidden email]
+EOF
+    test_expect_equal_file EXPECTED OUTPUT
+
+    test_begin_subtest "dump + tag + restore ($config)"
+    notmuch dump '*' > EXPECTED
+    notmuch tag -inbox '*'
+    notmuch restore < EXPECTED
+    notmuch dump > OUTPUT
+    test_expect_equal_file EXPECTED OUTPUT
+
+    test_begin_subtest "reindex ($config)"
+    notmuch search --output=messages '*' > EXPECTED
+    notmuch reindex '*'
+    notmuch search --output=messages '*' > OUTPUT
+    test_expect_equal_file EXPECTED OUTPUT
+
+    test_begin_subtest "use existing database ($config)"
+    output=$(notmuch new)
+    test_expect_equal "$output" 'No new mail.'
+
     test_begin_subtest "create database ($config)"
     rm -rf $DATABASE_PATH/{.notmuch,}/xapian
     notmuch new
@@ -100,29 +150,12 @@ for config in traditional split+prefix split XDG XDG+profile; do
     output=$(notmuch count '*')
     test_expect_equal "$output" '54'
 
-    test_begin_subtest "insert+search ($config)"
-    generate_message \
- "[subject]=\"insert-subject\"" \
- "[date]=\"Sat, 01 Jan 2000 12:00:00 -0000\"" \
- "[body]=\"insert-message\""
-    mkdir -p "$MAIL_DIR"/{cur,new,tmp}
-    notmuch insert < "$gen_msg_filename"
-    cur_msg_filename=$(notmuch search --output=files "subject:insert-subject")
-    test_expect_equal_file "$cur_msg_filename" "$gen_msg_filename"
-
     test_begin_subtest "Show a raw message ($config)"
     add_message
     notmuch show --format=raw id:$gen_msg_id > OUTPUT
     test_expect_equal_file $gen_msg_filename OUTPUT
     rm -f $gen_msg_filename
 
-    test_begin_subtest "compact+search ($config)"
-    notmuch search --output=messages '*' | sort > EXPECTED
-    notmuch compact
-    notmuch search --output=messages '*' | sort > OUTPUT
-    test_expect_equal_file EXPECTED OUTPUT
-
-
     test_begin_subtest "reply ($config)"
     add_message '[from]="Sender <[hidden email]>"' \
  [to]=[hidden email] \
@@ -141,36 +174,30 @@ On Tue, 05 Jan 2010 15:43:56 -0000, Sender <[hidden email]> wrote:
 > basic reply test
 EOF
     test_expect_equal_file EXPECTED OUTPUT
+    test_begin_subtest "insert+search ($config)"
+    generate_message \
+ "[subject]=\"insert-subject\"" \
+ "[date]=\"Sat, 01 Jan 2000 12:00:00 -0000\"" \
+ "[body]=\"insert-message\""
+    mkdir -p "$MAIL_DIR"/{cur,new,tmp}
+    notmuch insert < "$gen_msg_filename"
+    cur_msg_filename=$(notmuch search --output=files "subject:insert-subject")
+    test_expect_equal_file "$cur_msg_filename" "$gen_msg_filename"
 
-    test_begin_subtest "address ($config)"
-    notmuch address --deduplicate=no --sort=newest-first --output=sender --output=recipients path:foo >OUTPUT
-    cat <<EOF >EXPECTED
-Carl Worth <[hidden email]>
-[hidden email]
-EOF
-    test_expect_equal_file EXPECTED OUTPUT
-
-    test_begin_subtest "dump ($config)"
-    notmuch dump is:attachment and is:signed > OUTPUT
-    cat <<EOF > EXPECTED
-#notmuch-dump batch-tag:3 config,properties,tags
-+attachment +inbox +signed +unread -- id:[hidden email]
-+attachment +inbox +signed +unread -- id:[hidden email]
-EOF
-    test_expect_equal_file EXPECTED OUTPUT
 
-    test_begin_subtest "dump + tag + restore ($config)"
-    notmuch dump '*' > EXPECTED
-    notmuch tag -inbox '*'
-    notmuch restore < EXPECTED
-    notmuch dump > OUTPUT
+    test_begin_subtest "compact+search ($config)"
+    notmuch search --output=messages '*' | sort > EXPECTED
+    notmuch compact
+    notmuch search --output=messages '*' | sort > OUTPUT
     test_expect_equal_file EXPECTED OUTPUT
 
-    test_begin_subtest 'reindex ($config)'
-    notmuch search --output=messages '*' > EXPECTED
-    notmuch reindex '*'
-    notmuch search --output=messages '*' > OUTPUT
-    test_expect_equal_file EXPECTED OUTPUT
+    test_begin_subtest "upgrade backup ($config)"
+    features=$(xapian-metadata get $XAPIAN_PATH features | grep -v "^relative directory paths")
+    xapian-metadata set $XAPIAN_PATH features "$features"
+    output=$(notmuch new | grep Welcome)
+    test_expect_equal \
+ "$output" \
+ "Welcome to a new version of notmuch! Your database will now be upgraded."
 
     restore_config
 done
diff --git a/test/T400-hooks.sh b/test/T400-hooks.sh
index a3dd4c63..8267d057 100755
--- a/test/T400-hooks.sh
+++ b/test/T400-hooks.sh
@@ -28,9 +28,10 @@ add_message
 # create maildir structure for notmuch-insert
 mkdir -p "$MAIL_DIR"/{cur,new,tmp}
 
-for config in traditional profile explicit XDG; do
+for config in traditional profile explicit XDG split; do
     unset NOTMUCH_PROFILE
     notmuch config set database.hook_dir
+    notmuch config set database.path ${MAIL_DIR}
     case $config in
  traditional)
     HOOK_DIR=${MAIL_DIR}/.notmuch/hooks
@@ -50,6 +51,12 @@ for config in traditional profile explicit XDG; do
  XDG)
     HOOK_DIR=${HOME}/.config/notmuch/default/hooks
     ;;
+ split)
+    dir="$TMP_DIRECTORY/database.$test_count"
+    notmuch config set database.path $dir
+    notmuch config set database.mail_root $MAIL_DIR
+    HOOK_DIR=${dir}/hooks
+    ;;
     esac
 
     test_begin_subtest "pre-new is run [${config}]"
diff --git a/test/T530-upgrade.sh b/test/T530-upgrade.sh
index c599dacf..cce29f45 100755
--- a/test/T530-upgrade.sh
+++ b/test/T530-upgrade.sh
@@ -5,7 +5,7 @@ test_description='database upgrades'
 test_require_external_prereq xapian-metadata
 
 XAPIAN_PATH=$MAIL_DIR/.notmuch/xapian
-BACKUP_PATH=$MAIL_DIR/.notmuch
+BACKUP_PATH=$MAIL_DIR/.notmuch/backups
 
 delete_feature () {
     local key=$1
diff --git a/test/T590-libconfig.sh b/test/T590-libconfig.sh
index c21c139b..310668a9 100755
--- a/test/T590-libconfig.sh
+++ b/test/T590-libconfig.sh
@@ -366,6 +366,7 @@ cat <<'EOF' >EXPECTED
 MAIL_DIR
 MAIL_DIR
 MAIL_DIR/.notmuch/hooks
+MAIL_DIR/.notmuch/backups
 
 inbox;unread
 NULL
diff --git a/test/json_check_nodes.py b/test/json_check_nodes.py
index 17403c57..fd8f1607 100755
--- a/test/json_check_nodes.py
+++ b/test/json_check_nodes.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 import re
 import sys
 import json
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[PATCH 01/21] lib: publish API for notmuch_database_reopen

Include the (currently unused) mode argument which will specify which
mode to re-open the database in. Functionality and docs to be
finalized in a followup commit.
---
 lib/database.cc       | 3 ++-
 lib/message.cc        | 3 ++-
 lib/notmuch-private.h | 3 ---
 lib/notmuch.h         | 7 +++++++
 4 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/lib/database.cc b/lib/database.cc
index f96ba7c0..89865599 100644
--- a/lib/database.cc
+++ b/lib/database.cc
@@ -516,7 +516,8 @@ notmuch_database_close (notmuch_database_t *notmuch)
 }
 
 notmuch_status_t
-_notmuch_database_reopen (notmuch_database_t *notmuch)
+notmuch_database_reopen (notmuch_database_t *notmuch,
+ unused(notmuch_database_mode_t mode))
 {
     if (_notmuch_database_mode (notmuch) != NOTMUCH_DATABASE_MODE_READ_ONLY)
  return NOTMUCH_STATUS_UNSUPPORTED_OPERATION;
diff --git a/lib/message.cc b/lib/message.cc
index fca99082..1bea90f0 100644
--- a/lib/message.cc
+++ b/lib/message.cc
@@ -455,7 +455,8 @@ _notmuch_message_ensure_metadata (notmuch_message_t *message, void *field)
     /* all the way without an exception */
     break;
  } catch (const Xapian::DatabaseModifiedError &error) {
-    notmuch_status_t status = _notmuch_database_reopen (message->notmuch);
+    notmuch_status_t status = notmuch_database_reopen (message->notmuch,
+       NOTMUCH_DATABASE_MODE_READ_ONLY);
     if (status != NOTMUCH_STATUS_SUCCESS)
  INTERNAL_ERROR ("unhandled error from notmuch_database_reopen: %s\n",
  notmuch_status_to_string (status));
diff --git a/lib/notmuch-private.h b/lib/notmuch-private.h
index 2f5ccd6a..4516061b 100644
--- a/lib/notmuch-private.h
+++ b/lib/notmuch-private.h
@@ -206,9 +206,6 @@ _notmuch_message_id_compressed (void *ctx, const char *message_id);
 notmuch_status_t
 _notmuch_database_ensure_writable (notmuch_database_t *notmuch);
 
-notmuch_status_t
-_notmuch_database_reopen (notmuch_database_t *notmuch);
-
 void
 _notmuch_database_log (notmuch_database_t *notmuch,
        const char *format, ...);
diff --git a/lib/notmuch.h b/lib/notmuch.h
index 5a5d99c0..0c13f607 100644
--- a/lib/notmuch.h
+++ b/lib/notmuch.h
@@ -879,6 +879,13 @@ notmuch_database_find_message_by_filename (notmuch_database_t *notmuch,
 notmuch_tags_t *
 notmuch_database_get_all_tags (notmuch_database_t *db);
 
+/**
+ * Reopen an open notmuch database.
+ *
+ */
+notmuch_status_t
+notmuch_database_reopen (notmuch_database_t *db, notmuch_database_mode_t mode);
+
 /**
  * Create a new query for 'database'.
  *
--
2.30.0
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[PATCH 02/21] lib: save path of xapian database in notmuch struct.

In reply to this post by David Bremner-2
This will allow re-opening in a different mode (read/write
vs. read-only) with current Xapian API.
---
 lib/database-private.h |  4 ++++
 lib/open.cc            | 19 ++++++++++---------
 2 files changed, 14 insertions(+), 9 deletions(-)

diff --git a/lib/database-private.h b/lib/database-private.h
index d83cf0d0..d936b216 100644
--- a/lib/database-private.h
+++ b/lib/database-private.h
@@ -189,8 +189,12 @@ operator& (notmuch_field_flag_t a, notmuch_field_flag_t b)
 struct _notmuch_database {
     bool exception_reported;
 
+    /* Path to database parent directory and or/mail root */
     char *path;
 
+    /* Path to actual database */
+    const char *xapian_path;
+
     int atomic_nesting;
     /* true if changes have been made in this atomic section */
     bool atomic_dirty;
diff --git a/lib/open.cc b/lib/open.cc
index 3b86065b..8885ec90 100644
--- a/lib/open.cc
+++ b/lib/open.cc
@@ -193,7 +193,7 @@ notmuch_database_open_with_config (const char *database_path,
     notmuch_status_t status = NOTMUCH_STATUS_SUCCESS;
     void *local = talloc_new (NULL);
     notmuch_database_t *notmuch = NULL;
-    char *notmuch_path, *xapian_path, *incompat_features;
+    char *notmuch_path, *incompat_features;
     char *message = NULL;
     struct stat st;
     int err;
@@ -218,12 +218,6 @@ notmuch_database_open_with_config (const char *database_path,
  goto DONE;
     }
 
-    if (! (xapian_path = talloc_asprintf (local, "%s/%s", notmuch_path, "xapian"))) {
- message = strdup ("Out of memory\n");
- status = NOTMUCH_STATUS_OUT_OF_MEMORY;
- goto DONE;
-    }
-
     /* Initialize the GLib type system and threads */
 #if ! GLIB_CHECK_VERSION (2, 35, 1)
     g_type_init ();
@@ -245,16 +239,23 @@ notmuch_database_open_with_config (const char *database_path,
     notmuch->writable_xapian_db = NULL;
     notmuch->atomic_nesting = 0;
     notmuch->view = 1;
+
+    if (! (notmuch->xapian_path = talloc_asprintf (notmuch, "%s/%s", notmuch_path, "xapian"))) {
+ message = strdup ("Out of memory\n");
+ status = NOTMUCH_STATUS_OUT_OF_MEMORY;
+ goto DONE;
+    }
+
     try {
  std::string last_thread_id;
  std::string last_mod;
 
  if (mode == NOTMUCH_DATABASE_MODE_READ_WRITE) {
-    notmuch->writable_xapian_db = new Xapian::WritableDatabase (xapian_path,
+    notmuch->writable_xapian_db = new Xapian::WritableDatabase (notmuch->xapian_path,
  DB_ACTION);
     notmuch->xapian_db = notmuch->writable_xapian_db;
  } else {
-    notmuch->xapian_db = new Xapian::Database (xapian_path);
+    notmuch->xapian_db = new Xapian::Database (notmuch->xapian_path);
  }
 
  /* Check version.  As of database version 3, we represent
--
2.30.0
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[PATCH 03/21] lib: support reopening databases for write access.

In reply to this post by David Bremner-2
In the future xapian will apparently support this more conveniently
for the cases other than READ_ONLY => READ_ONLY
---
 lib/database.cc     |  23 --------
 lib/notmuch.h       |   6 +++
 lib/open.cc         |  45 ++++++++++++++++
 test/T595-reopen.sh | 125 ++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 176 insertions(+), 23 deletions(-)
 create mode 100755 test/T595-reopen.sh

diff --git a/lib/database.cc b/lib/database.cc
index 89865599..b231a619 100644
--- a/lib/database.cc
+++ b/lib/database.cc
@@ -515,29 +515,6 @@ notmuch_database_close (notmuch_database_t *notmuch)
     return status;
 }
 
-notmuch_status_t
-notmuch_database_reopen (notmuch_database_t *notmuch,
- unused(notmuch_database_mode_t mode))
-{
-    if (_notmuch_database_mode (notmuch) != NOTMUCH_DATABASE_MODE_READ_ONLY)
- return NOTMUCH_STATUS_UNSUPPORTED_OPERATION;
-
-    try {
- notmuch->xapian_db->reopen ();
-    } catch (const Xapian::Error &error) {
- if (! notmuch->exception_reported) {
-    _notmuch_database_log (notmuch, "Error: A Xapian exception reopening database: %s\n",
-   error.get_msg ().c_str ());
-    notmuch->exception_reported = true;
- }
- return NOTMUCH_STATUS_XAPIAN_EXCEPTION;
-    }
-
-    notmuch->view++;
-
-    return NOTMUCH_STATUS_SUCCESS;
-}
-
 static int
 unlink_cb (const char *path,
    unused (const struct stat *sb),
diff --git a/lib/notmuch.h b/lib/notmuch.h
index 0c13f607..37d7581f 100644
--- a/lib/notmuch.h
+++ b/lib/notmuch.h
@@ -882,6 +882,12 @@ notmuch_database_get_all_tags (notmuch_database_t *db);
 /**
  * Reopen an open notmuch database.
  *
+ * @param [in] db open notmuch database
+ * @param [in] mode mode (read only or read-write) for reopened database.
+ *
+ * @retval #NOTMUCH_STATUS_SUCCESS
+ * @retval #NOTMUCH_STATUS_ILLEGAL_ARGUMENT The passed database was not open.
+ * @retval #NOTMUCH_STATUS_XAPIAN_EXCEPTION A Xapian exception occured
  */
 notmuch_status_t
 notmuch_database_reopen (notmuch_database_t *db, notmuch_database_mode_t mode);
diff --git a/lib/open.cc b/lib/open.cc
index 8885ec90..f1b88ea1 100644
--- a/lib/open.cc
+++ b/lib/open.cc
@@ -495,3 +495,48 @@ notmuch_database_create_with_config (const char *database_path,
  talloc_free (notmuch);
     return status;
 }
+
+notmuch_status_t
+notmuch_database_reopen (notmuch_database_t *notmuch,
+ notmuch_database_mode_t new_mode)
+{
+    notmuch_database_mode_t cur_mode = _notmuch_database_mode (notmuch);
+    if (notmuch->xapian_db == NULL) {
+ _notmuch_database_log (notmuch, "Cannot reopen closed or nonexistent database\n");
+ return NOTMUCH_STATUS_ILLEGAL_ARGUMENT;
+    }
+
+    try {
+ if (cur_mode == new_mode &&
+    new_mode == NOTMUCH_DATABASE_MODE_READ_ONLY) {
+    notmuch->xapian_db->reopen ();
+ } else {
+    notmuch->xapian_db->close ();
+
+    delete notmuch->xapian_db;
+    notmuch->xapian_db = NULL;
+    /* no need to free the same object twice */
+    notmuch->writable_xapian_db = NULL;
+
+    if (new_mode == NOTMUCH_DATABASE_MODE_READ_WRITE) {
+ notmuch->writable_xapian_db = new Xapian::WritableDatabase (notmuch->xapian_path,
+    DB_ACTION);
+ notmuch->xapian_db = notmuch->writable_xapian_db;
+    } else {
+ notmuch->xapian_db = new Xapian::Database (notmuch->xapian_path,
+   DB_ACTION);
+    }
+ }
+    } catch (const Xapian::Error &error) {
+ if (! notmuch->exception_reported) {
+    _notmuch_database_log (notmuch, "Error: A Xapian exception reopening database: %s\n",
+   error.get_msg ().c_str ());
+    notmuch->exception_reported = true;
+ }
+ return NOTMUCH_STATUS_XAPIAN_EXCEPTION;
+    }
+
+    notmuch->view++;
+    notmuch->open = true;
+    return NOTMUCH_STATUS_SUCCESS;
+}
diff --git a/test/T595-reopen.sh b/test/T595-reopen.sh
new file mode 100755
index 00000000..7375e2ac
--- /dev/null
+++ b/test/T595-reopen.sh
@@ -0,0 +1,125 @@
+#!/usr/bin/env bash
+test_description="library reopen API"
+
+. $(dirname "$0")/test-lib.sh || exit 1
+
+add_email_corpus
+
+cat <<EOF > c_head
+#include <string.h>
+#include <stdlib.h>
+#include <notmuch-test.h>
+
+int main (int argc, char** argv)
+{
+   notmuch_database_t *db;
+   char *val;
+   notmuch_status_t stat;
+   notmuch_database_mode_t mode = NOTMUCH_DATABASE_MODE_READ_ONLY;
+
+   char *msg = NULL;
+
+   for (int i = 1; i < argc; i++)
+      if (strcmp (argv[i], "%NULL%") == 0) argv[i] = NULL;
+
+   if (argv[2] && (argv[2][0] == 'w' || argv[2][0] == 'W'))
+     mode = NOTMUCH_DATABASE_MODE_READ_WRITE;
+
+   stat = notmuch_database_open_with_config (argv[1],
+     mode,
+     argv[3],
+     argv[4],
+     &db,
+     &msg);
+   if (stat != NOTMUCH_STATUS_SUCCESS) {
+     fprintf (stderr, "error opening database: %d %s\n", stat, msg ? msg : "");
+     exit (1);
+   }
+EOF
+
+cat <<EOF > c_tail
+   EXPECT0(notmuch_database_destroy(db));
+}
+EOF
+
+# The sequence of tests is important here
+
+test_begin_subtest "notmuch_database_reopen (read=>write)"
+cat c_head - c_tail <<'EOF' | test_C ${MAIL_DIR} read ${NOTMUCH_CONFIG}
+{
+   EXPECT0(notmuch_database_reopen (db, NOTMUCH_DATABASE_MODE_READ_WRITE));
+   EXPECT0(notmuch_database_set_config (db, "test.key1", "testvalue1"));
+   EXPECT0(notmuch_database_set_config (db, "test.key2", "testvalue2"));
+   EXPECT0(notmuch_database_get_config (db, "test.key1", &val));
+   printf("test.key1 = %s\n", val);
+   EXPECT0(notmuch_database_get_config (db, "test.key2", &val));
+   printf("test.key2 = %s\n", val);
+}
+EOF
+cat <<'EOF' >EXPECTED
+== stdout ==
+test.key1 = testvalue1
+test.key2 = testvalue2
+== stderr ==
+EOF
+test_expect_equal_file EXPECTED OUTPUT
+
+test_begin_subtest "notmuch_database_reopen (read=>read)"
+cat c_head - c_tail <<'EOF' | test_C ${MAIL_DIR} read ${NOTMUCH_CONFIG}
+{
+   EXPECT0(notmuch_database_reopen (db, NOTMUCH_DATABASE_MODE_READ_ONLY));
+   EXPECT0(notmuch_database_get_config (db, "test.key1", &val));
+   printf("test.key1 = %s\n", val);
+   EXPECT0(notmuch_database_get_config (db, "test.key2", &val));
+   printf("test.key2 = %s\n", val);
+}
+EOF
+cat <<'EOF' >EXPECTED
+== stdout ==
+test.key1 = testvalue1
+test.key2 = testvalue2
+== stderr ==
+EOF
+test_expect_equal_file EXPECTED OUTPUT
+
+test_begin_subtest "notmuch_database_reopen (write=>read)"
+cat c_head - c_tail <<'EOF' | test_C ${MAIL_DIR} write ${NOTMUCH_CONFIG}
+{
+   EXPECT0(notmuch_database_reopen (db, NOTMUCH_DATABASE_MODE_READ_ONLY));
+   EXPECT0(notmuch_database_get_config (db, "test.key1", &val));
+   printf("test.key1 = %s\n", val);
+   EXPECT0(notmuch_database_get_config (db, "test.key2", &val));
+   printf("test.key2 = %s\n", val);
+}
+EOF
+cat <<'EOF' >EXPECTED
+== stdout ==
+test.key1 = testvalue1
+test.key2 = testvalue2
+== stderr ==
+EOF
+test_expect_equal_file EXPECTED OUTPUT
+
+test_begin_subtest "notmuch_database_reopen (write=>write)"
+cat c_head - c_tail <<'EOF' | test_C ${MAIL_DIR} write ${NOTMUCH_CONFIG}
+{
+   EXPECT0(notmuch_database_reopen (db, NOTMUCH_DATABASE_MODE_READ_WRITE));
+   EXPECT0(notmuch_database_set_config (db, "test.key3", "testvalue3"));
+   EXPECT0(notmuch_database_get_config (db, "test.key1", &val));
+   printf("test.key1 = %s\n", val);
+   EXPECT0(notmuch_database_get_config (db, "test.key2", &val));
+   printf("test.key2 = %s\n", val);
+   EXPECT0(notmuch_database_get_config (db, "test.key3", &val));
+   printf("test.key3 = %s\n", val);
+}
+EOF
+cat <<'EOF' >EXPECTED
+== stdout ==
+test.key1 = testvalue1
+test.key2 = testvalue2
+test.key3 = testvalue3
+== stderr ==
+EOF
+test_expect_equal_file EXPECTED OUTPUT
+
+test_done
--
2.30.0
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[PATCH 04/21] CLI/show: complete conversion to new configuration framework.

In reply to this post by David Bremner-2
In order to open the database in main() for this command, we may need
to re-open it in the (possibly less common) case where crypto options
require it.
---
 notmuch-show.c           | 26 +++++++-------------------
 notmuch.c                |  2 +-
 test/T035-read-config.sh |  2 --
 3 files changed, 8 insertions(+), 22 deletions(-)

diff --git a/notmuch-show.c b/notmuch-show.c
index c3c42caa..4a26f8ce 100644
--- a/notmuch-show.c
+++ b/notmuch-show.c
@@ -1215,9 +1215,8 @@ static const notmuch_show_format_t *formatters[] = {
 };
 
 int
-notmuch_show_command (notmuch_config_t *config, unused(notmuch_database_t *notmuch), int argc, char *argv[])
+notmuch_show_command (unused(notmuch_config_t *config), notmuch_database_t *notmuch, int argc, char *argv[])
 {
-    notmuch_database_t *notmuch;
     notmuch_query_t *query;
     char *query_string;
     int opt_index, ret;
@@ -1234,7 +1233,7 @@ notmuch_show_command (notmuch_config_t *config, unused(notmuch_database_t *notmu
     bool entire_thread_set = false;
     bool single_message;
     bool unthreaded = FALSE;
-    char *status_string = NULL;
+    notmuch_status_t status;
 
     notmuch_opt_desc_t options[] = {
  { .opt_keyword = &format, .name = "format", .keywords =
@@ -1324,25 +1323,14 @@ notmuch_show_command (notmuch_config_t *config, unused(notmuch_database_t *notmu
  fprintf (stderr, "Warning: --include-html only implemented for format=text, format=json and format=sexp\n");
     }
 
-    notmuch_database_mode_t mode = NOTMUCH_DATABASE_MODE_READ_ONLY;
-    if (params.crypto.decrypt == NOTMUCH_DECRYPT_TRUE)
- mode = NOTMUCH_DATABASE_MODE_READ_WRITE;
-    if (notmuch_database_open_with_config (NULL,
-   mode,
-   _notmuch_config_get_path (config),
-   NULL,
-   &notmuch,
-   &status_string)) {
- if (status_string) {
-    fputs (status_string, stderr);
-    free (status_string);
+    if (params.crypto.decrypt == NOTMUCH_DECRYPT_TRUE) {
+ status = notmuch_database_reopen (notmuch, NOTMUCH_DATABASE_MODE_READ_WRITE);
+ if (status) {
+    fprintf (stderr, "Error reopening database for READ_WRITE: %s\n", notmuch_status_to_string (status));
+    return EXIT_FAILURE;
  }
-
- return EXIT_FAILURE;
     }
 
-    config = NULL;
-
     notmuch_exit_if_unmatched_db_uuid (notmuch);
 
     query_string = query_string_from_args (notmuch, argc - opt_index, argv + opt_index);
diff --git a/notmuch.c b/notmuch.c
index 7360e0e6..71482e43 100644
--- a/notmuch.c
+++ b/notmuch.c
@@ -152,7 +152,7 @@ static command_t commands[] = {
       "Search for messages matching the given search terms." },
     { "address", notmuch_address_command, NOTMUCH_COMMAND_DATABASE_EARLY,
       "Get addresses from messages matching the given search terms." },
-    { "show", notmuch_show_command, NOTMUCH_COMMAND_CONFIG_OPEN,
+    { "show", notmuch_show_command, NOTMUCH_COMMAND_DATABASE_EARLY,
       "Show all messages matching the search terms." },
     { "count", notmuch_count_command, NOTMUCH_COMMAND_DATABASE_EARLY,
       "Count messages matching the search terms." },
diff --git a/test/T035-read-config.sh b/test/T035-read-config.sh
index 205d1736..ac0f420b 100755
--- a/test/T035-read-config.sh
+++ b/test/T035-read-config.sh
@@ -378,7 +378,6 @@ restore_database
 test_expect_equal "$output" "OK"
 
 test_begin_subtest "show with alternate config (xdg)"
-test_subtest_known_broken
 backup_database
 notmuch tag -- +foobar17 '*'
 xdg_config
@@ -389,7 +388,6 @@ restore_config
 test_expect_equal "$output" "OK"
 
 test_begin_subtest "show with alternate config (xdg+profile)"
-test_subtest_known_broken
 backup_database
 notmuch tag -- +foobar17 '*'
 xdg_config foobar17
--
2.30.0
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[PATCH 05/21] lib/open: support NOTMUCH_DATABASE environment variable

In reply to this post by David Bremner-2
The additional code is trivial, but making sure we get the priority of
various options correct takes a few tests.
---
 lib/open.cc            |  4 +++
 test/T590-libconfig.sh | 67 +++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 70 insertions(+), 1 deletion(-)

diff --git a/lib/open.cc b/lib/open.cc
index f1b88ea1..f08b5de5 100644
--- a/lib/open.cc
+++ b/lib/open.cc
@@ -167,6 +167,10 @@ _choose_database_path (const char *config_path,
  return status;
     }
 
+    if (! *database_path) {
+       *database_path = getenv ("NOTMUCH_DATABASE");
+    }
+
     if (! *database_path && *key_file)
  *database_path = g_key_file_get_value (*key_file, "database", "path", NULL);
 
diff --git a/test/T590-libconfig.sh b/test/T590-libconfig.sh
index e7e6e08a..4e510e97 100755
--- a/test/T590-libconfig.sh
+++ b/test/T590-libconfig.sh
@@ -27,7 +27,7 @@ int main (int argc, char** argv)
                                               &db,
                                               &msg);
    if (stat != NOTMUCH_STATUS_SUCCESS) {
-     fprintf (stderr, "error opening database: %d %s\n", stat, msg ? msg : "");
+     fprintf (stderr, "error opening database\n%s\n%s\n", notmuch_status_to_string (stat), msg ? msg : "");
      exit (1);
    }
 EOF
@@ -505,4 +505,69 @@ EOF
 test_expect_equal_file EXPECTED OUTPUT
 restore_database
 
+test_begin_subtest "no config, fail to open database"
+old_NOTMUCH_CONFIG=${NOTMUCH_CONFIG}
+unset NOTMUCH_CONFIG
+cat c_head - c_tail <<'EOF' | test_C %NULL% '' %NULL%
+{
+   printf("NOT RUN");
+}
+EOF
+NOTMUCH_CONFIG=${old_NOTMUCH_CONFIG}
+cat <<'EOF' >EXPECTED
+== stdout ==
+== stderr ==
+error opening database
+Erroneous NULL pointer
+Error: Cannot open a database for a NULL path.
+
+EOF
+test_expect_equal_file EXPECTED OUTPUT
+
+test_begin_subtest "open database from NOTMUCH_DATABASE"
+old_NOTMUCH_CONFIG=${NOTMUCH_CONFIG}
+unset NOTMUCH_CONFIG
+export NOTMUCH_DATABASE=${MAIL_DIR}
+cat c_head - c_tail <<'EOF' | test_C %NULL% '' %NULL%
+{
+   EXPECT0(notmuch_database_get_config (db, "test.key1", &val));
+   printf("test.key1 = %s\n", val);
+   EXPECT0(notmuch_database_get_config (db, "test.key2", &val));
+   printf("test.key2 = %s\n", val);
+}
+EOF
+NOTMUCH_CONFIG=${old_NOTMUCH_CONFIG}
+unset NOTMUCH_DATABASE
+cat <<'EOF' >EXPECTED
+== stdout ==
+test.key1 = testvalue1
+test.key2 = testvalue2
+== stderr ==
+EOF
+test_expect_equal_file EXPECTED OUTPUT
+
+test_begin_subtest "NOTMUCH_DATABASE overrides config"
+old_path=$(notmuch config get database.path)
+notmuch config set database.path /nonexistent
+export NOTMUCH_DATABASE=${MAIL_DIR}
+cat c_head - c_tail <<'EOF' | test_C %NULL% '' %NULL%
+{
+   EXPECT0(notmuch_database_get_config (db, "test.key1", &val));
+   printf("test.key1 = %s\n", val);
+   EXPECT0(notmuch_database_get_config (db, "test.key2", &val));
+   printf("test.key2 = %s\n", val);
+}
+EOF
+NOTMUCH_CONFIG=${old_NOTMUCH_CONFIG}
+unset NOTMUCH_DATABASE
+cat <<'EOF' >EXPECTED
+== stdout ==
+test.key1 = testvalue1
+test.key2 = testvalue2
+== stderr ==
+EOF
+notmuch config set database.path "${old_path}"
+test_expect_equal_file EXPECTED OUTPUT
+
+
 test_done
--
2.30.0
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[PATCH 06/21] lib/open: allocate notmuch_t struct early

In reply to this post by David Bremner-2
This gives more flexibility in restructuring the database opening
code.
---
 lib/open.cc | 46 +++++++++++++++++++++++++++++-----------------
 1 file changed, 29 insertions(+), 17 deletions(-)

diff --git a/lib/open.cc b/lib/open.cc
index f08b5de5..c7fb6f81 100644
--- a/lib/open.cc
+++ b/lib/open.cc
@@ -186,6 +186,20 @@ _choose_database_path (const char *config_path,
     return NOTMUCH_STATUS_SUCCESS;
 }
 
+notmuch_database_t * _alloc_notmuch() {
+    notmuch_database_t * notmuch;
+    notmuch = talloc_zero (NULL, notmuch_database_t);
+    if (!notmuch)
+ return NULL;
+
+    notmuch->exception_reported = false;
+    notmuch->status_string = NULL;
+    notmuch->writable_xapian_db = NULL;
+    notmuch->atomic_nesting = 0;
+    notmuch->view = 1;
+    return notmuch;
+}
+
 notmuch_status_t
 notmuch_database_open_with_config (const char *database_path,
    notmuch_database_mode_t mode,
@@ -205,9 +219,18 @@ notmuch_database_open_with_config (const char *database_path,
     GKeyFile *key_file = NULL;
     static int initialized = 0;
 
+    notmuch = _alloc_notmuch ();
+    if (!notmuch) {
+ status = NOTMUCH_STATUS_OUT_OF_MEMORY;
+ goto DONE;
+    }
+
     if ((status = _choose_database_path (config_path, profile, &key_file, &database_path, &message)))
  goto DONE;
 
+    notmuch->path = talloc_strdup (notmuch, database_path);
+    strip_trailing (notmuch->path, '/');
+
     if (! (notmuch_path = talloc_asprintf (local, "%s/%s", database_path, ".notmuch"))) {
  message = strdup ("Out of memory\n");
  status = NOTMUCH_STATUS_OUT_OF_MEMORY;
@@ -222,6 +245,12 @@ notmuch_database_open_with_config (const char *database_path,
  goto DONE;
     }
 
+    if (! (notmuch->xapian_path = talloc_asprintf (local, "%s/%s", notmuch_path, "xapian"))) {
+ message = strdup ("Out of memory\n");
+ status = NOTMUCH_STATUS_OUT_OF_MEMORY;
+ goto DONE;
+    }
+
     /* Initialize the GLib type system and threads */
 #if ! GLIB_CHECK_VERSION (2, 35, 1)
     g_type_init ();
@@ -233,23 +262,6 @@ notmuch_database_open_with_config (const char *database_path,
  initialized = 1;
     }
 
-    notmuch = talloc_zero (NULL, notmuch_database_t);
-    notmuch->exception_reported = false;
-    notmuch->status_string = NULL;
-    notmuch->path = talloc_strdup (notmuch, database_path);
-
-    strip_trailing (notmuch->path, '/');
-
-    notmuch->writable_xapian_db = NULL;
-    notmuch->atomic_nesting = 0;
-    notmuch->view = 1;
-
-    if (! (notmuch->xapian_path = talloc_asprintf (notmuch, "%s/%s", notmuch_path, "xapian"))) {
- message = strdup ("Out of memory\n");
- status = NOTMUCH_STATUS_OUT_OF_MEMORY;
- goto DONE;
-    }
-
     try {
  std::string last_thread_id;
  std::string last_mod;
--
2.30.0
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[PATCH 07/21] lib: remove "path" from notmuch struct

In reply to this post by David Bremner-2
This removes duplication between the struct element and the
configuration string_map entry.
---
 lib/config.cc          |  3 +++
 lib/database-private.h |  3 ---
 lib/database.cc        |  2 +-
 lib/open.cc            | 13 +++++++++++--
 4 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/lib/config.cc b/lib/config.cc
index 948751bc..99b75e7b 100644
--- a/lib/config.cc
+++ b/lib/config.cc
@@ -473,5 +473,8 @@ notmuch_config_set (notmuch_database_t *notmuch, notmuch_config_key_t key, const
 
 void
 _notmuch_config_cache (notmuch_database_t *notmuch, notmuch_config_key_t key, const char *val) {
+    if (notmuch->config == NULL)
+       notmuch->config = _notmuch_string_map_create (notmuch);
+
     _notmuch_string_map_set (notmuch->config, _notmuch_config_key_to_string (key), val);
 }
diff --git a/lib/database-private.h b/lib/database-private.h
index d936b216..2900382d 100644
--- a/lib/database-private.h
+++ b/lib/database-private.h
@@ -189,9 +189,6 @@ operator& (notmuch_field_flag_t a, notmuch_field_flag_t b)
 struct _notmuch_database {
     bool exception_reported;
 
-    /* Path to database parent directory and or/mail root */
-    char *path;
-
     /* Path to actual database */
     const char *xapian_path;
 
diff --git a/lib/database.cc b/lib/database.cc
index b231a619..afa8b754 100644
--- a/lib/database.cc
+++ b/lib/database.cc
@@ -748,7 +748,7 @@ notmuch_database_destroy (notmuch_database_t *notmuch)
 const char *
 notmuch_database_get_path (notmuch_database_t *notmuch)
 {
-    return notmuch->path;
+    return notmuch_config_get (notmuch, NOTMUCH_CONFIG_DATABASE_PATH);
 }
 
 unsigned int
diff --git a/lib/open.cc b/lib/open.cc
index c7fb6f81..d599aeac 100644
--- a/lib/open.cc
+++ b/lib/open.cc
@@ -200,6 +200,16 @@ notmuch_database_t * _alloc_notmuch() {
     return notmuch;
 }
 
+static void
+_set_database_path (notmuch_database_t *notmuch,
+          const char *database_path) {
+    char *path=talloc_strdup (notmuch, database_path);
+
+    strip_trailing (path, '/');
+
+    _notmuch_config_cache (notmuch, NOTMUCH_CONFIG_DATABASE_PATH, path);
+}
+
 notmuch_status_t
 notmuch_database_open_with_config (const char *database_path,
    notmuch_database_mode_t mode,
@@ -228,8 +238,7 @@ notmuch_database_open_with_config (const char *database_path,
     if ((status = _choose_database_path (config_path, profile, &key_file, &database_path, &message)))
  goto DONE;
 
-    notmuch->path = talloc_strdup (notmuch, database_path);
-    strip_trailing (notmuch->path, '/');
+    _set_database_path (notmuch, database_path);
 
     if (! (notmuch_path = talloc_asprintf (local, "%s/%s", database_path, ".notmuch"))) {
  message = strdup ("Out of memory\n");
--
2.30.0
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[PATCH 08/21] lib/open: factor out library initialization

In reply to this post by David Bremner-2
This is slightly more tidy, but more importantly it allows for re-use
of this code in n_d_create_with_config.
---
 lib/open.cc | 29 ++++++++++++++++++-----------
 1 file changed, 18 insertions(+), 11 deletions(-)

diff --git a/lib/open.cc b/lib/open.cc
index d599aeac..7f25bd36 100644
--- a/lib/open.cc
+++ b/lib/open.cc
@@ -210,6 +210,22 @@ _set_database_path (notmuch_database_t *notmuch,
     _notmuch_config_cache (notmuch, NOTMUCH_CONFIG_DATABASE_PATH, path);
 }
 
+static void _init_libs () {
+
+    static int initialized = 0;
+
+    /* Initialize the GLib type system and threads */
+#if ! GLIB_CHECK_VERSION (2, 35, 1)
+    g_type_init ();
+#endif
+
+    /* Initialize gmime */
+    if (! initialized) {
+ g_mime_init ();
+ initialized = 1;
+    }
+}
+
 notmuch_status_t
 notmuch_database_open_with_config (const char *database_path,
    notmuch_database_mode_t mode,
@@ -229,6 +245,8 @@ notmuch_database_open_with_config (const char *database_path,
     GKeyFile *key_file = NULL;
     static int initialized = 0;
 
+    _init_libs ();
+
     notmuch = _alloc_notmuch ();
     if (!notmuch) {
  status = NOTMUCH_STATUS_OUT_OF_MEMORY;
@@ -260,17 +278,6 @@ notmuch_database_open_with_config (const char *database_path,
  goto DONE;
     }
 
-    /* Initialize the GLib type system and threads */
-#if ! GLIB_CHECK_VERSION (2, 35, 1)
-    g_type_init ();
-#endif
-
-    /* Initialize gmime */
-    if (! initialized) {
- g_mime_init ();
- initialized = 1;
-    }
-
     try {
  std::string last_thread_id;
  std::string last_mod;
--
2.30.0
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[PATCH 09/21] lib/open: reuse directory checks from n_d_c_with_config

In reply to this post by David Bremner-2
Make checks more uniform between creating new databases and opening
existing ones.
---
 lib/open.cc              | 73 +++++++++++++++++++++++++---------------
 test/T030-config.sh      |  2 +-
 test/T560-lib-error.sh   |  4 +--
 test/T750-user-header.sh |  2 +-
 4 files changed, 50 insertions(+), 31 deletions(-)

diff --git a/lib/open.cc b/lib/open.cc
index 7f25bd36..6a5c99dd 100644
--- a/lib/open.cc
+++ b/lib/open.cc
@@ -152,6 +152,29 @@ DONE:
     return status;
 }
 
+static notmuch_status_t
+_db_dir_exists (const char *database_path, char **message)
+{
+    struct stat st;
+    int err;
+
+    err = stat (database_path, &st);
+    if (err) {
+ IGNORE_RESULT (asprintf (message, "Error: Cannot open database at %s: %s.\n",
+ database_path, strerror (errno)));
+ return NOTMUCH_STATUS_FILE_ERROR;
+    }
+
+    if (! S_ISDIR (st.st_mode)) {
+ IGNORE_RESULT (asprintf (message, "Error: Cannot open database at %s: "
+ "Not a directory.\n",
+ database_path));
+ return NOTMUCH_STATUS_FILE_ERROR;
+    }
+
+    return NOTMUCH_STATUS_SUCCESS;
+}
+
 static notmuch_status_t
 _choose_database_path (const char *config_path,
        const char *profile,
@@ -239,11 +262,8 @@ notmuch_database_open_with_config (const char *database_path,
     notmuch_database_t *notmuch = NULL;
     char *notmuch_path, *incompat_features;
     char *message = NULL;
-    struct stat st;
-    int err;
     unsigned int version;
     GKeyFile *key_file = NULL;
-    static int initialized = 0;
 
     _init_libs ();
 
@@ -258,19 +278,19 @@ notmuch_database_open_with_config (const char *database_path,
 
     _set_database_path (notmuch, database_path);
 
+    status = _db_dir_exists (database_path, &message);
+    if (status)
+        goto DONE;
+
     if (! (notmuch_path = talloc_asprintf (local, "%s/%s", database_path, ".notmuch"))) {
  message = strdup ("Out of memory\n");
  status = NOTMUCH_STATUS_OUT_OF_MEMORY;
  goto DONE;
     }
 
-    err = stat (notmuch_path, &st);
-    if (err) {
- IGNORE_RESULT (asprintf (&message, "Error opening database at %s: %s\n",
- notmuch_path, strerror (errno)));
- status = NOTMUCH_STATUS_FILE_ERROR;
- goto DONE;
-    }
+    status = _db_dir_exists (notmuch_path, &message);
+    if (status)
+        goto DONE;
 
     if (! (notmuch->xapian_path = talloc_asprintf (local, "%s/%s", notmuch_path, "xapian"))) {
  message = strdup ("Out of memory\n");
@@ -454,34 +474,34 @@ notmuch_database_create_with_config (const char *database_path,
     char *notmuch_path = NULL;
     char *message = NULL;
     GKeyFile *key_file = NULL;
-    struct stat st;
+    void *local = talloc_new (NULL);
     int err;
 
-    if ((status = _choose_database_path (config_path, profile, &key_file, &database_path, &message)))
- goto DONE;
+    _init_libs ();
 
-    err = stat (database_path, &st);
-    if (err) {
- IGNORE_RESULT (asprintf (&message, "Error: Cannot create database at %s: %s.\n",
- database_path, strerror (errno)));
- status = NOTMUCH_STATUS_FILE_ERROR;
+    notmuch = _alloc_notmuch ();
+    if (!notmuch) {
+ status = NOTMUCH_STATUS_OUT_OF_MEMORY;
  goto DONE;
     }
 
-    if (! S_ISDIR (st.st_mode)) {
- IGNORE_RESULT (asprintf (&message, "Error: Cannot create database at %s: "
- "Not a directory.\n",
- database_path));
- status = NOTMUCH_STATUS_FILE_ERROR;
+    if ((status = _choose_database_path (config_path, profile, &key_file, &database_path, &message)))
  goto DONE;
-    }
 
-    notmuch_path = talloc_asprintf (NULL, "%s/%s", database_path, ".notmuch");
+    status = _db_dir_exists (database_path, &message);
+    if (status)
+        goto DONE;
+
+    _set_database_path (notmuch, database_path);
+
+    notmuch_path = talloc_asprintf (local, "%s/%s", database_path, ".notmuch");
 
     err = mkdir (notmuch_path, 0755);
     if (err) {
  if (errno == EEXIST) {
     status = NOTMUCH_STATUS_DATABASE_EXISTS;
+    talloc_free (notmuch);
+    notmuch = NULL;
  } else {
     IGNORE_RESULT (asprintf (&message, "Error: Cannot create directory %s: %s.\n",
      notmuch_path, strerror (errno)));
@@ -512,8 +532,7 @@ notmuch_database_create_with_config (const char *database_path,
     }
 
   DONE:
-    if (notmuch_path)
- talloc_free (notmuch_path);
+    talloc_free(local);
 
     if (message) {
  if (status_string)
diff --git a/test/T030-config.sh b/test/T030-config.sh
index 883541d5..67c9545c 100755
--- a/test/T030-config.sh
+++ b/test/T030-config.sh
@@ -61,7 +61,7 @@ built_with.compact=something
 built_with.field_processor=something
 built_with.retry_lock=something
 ====
-Error opening database at MAIL_DIR/.notmuch: No such file or directory
+Error: Cannot open database at MAIL_DIR/.notmuch: No such file or directory.
 EOF
 test_expect_equal_file EXPECTED OUTPUT
 
diff --git a/test/T560-lib-error.sh b/test/T560-lib-error.sh
index ade376ef..03df69d9 100755
--- a/test/T560-lib-error.sh
+++ b/test/T560-lib-error.sh
@@ -76,7 +76,7 @@ EOF
 cat <<'EOF' >EXPECTED
 == stdout ==
 == stderr ==
-Error opening database at CWD/nonexistent/foo/.notmuch: No such file or directory
+Error: Cannot open database at CWD/nonexistent/foo: No such file or directory.
 EOF
 test_expect_equal_file EXPECTED OUTPUT
 
@@ -111,7 +111,7 @@ EOF
 cat <<'EOF' >EXPECTED
 == stdout ==
 == stderr ==
-Error: Cannot create database at CWD/nonexistent/foo: No such file or directory.
+Error: Cannot open database at CWD/nonexistent/foo: No such file or directory.
 EOF
 test_expect_equal_file EXPECTED OUTPUT
 
diff --git a/test/T750-user-header.sh b/test/T750-user-header.sh
index ff554b06..b19db571 100755
--- a/test/T750-user-header.sh
+++ b/test/T750-user-header.sh
@@ -5,7 +5,7 @@ test_description='indexing user specified headers'
 test_begin_subtest "error adding user header before initializing DB"
 notmuch config set index.header.List List-Id 2>&1 | notmuch_dir_sanitize > OUTPUT
 cat <<EOF > EXPECTED
-Error opening database at MAIL_DIR/.notmuch: No such file or directory
+Error: Cannot open database at MAIL_DIR/.notmuch: No such file or directory.
 EOF
 test_expect_equal_file EXPECTED OUTPUT
 
--
2.30.0
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[PATCH 10/21] lib/open: factor out the second half of n_d_open_with_config

In reply to this post by David Bremner-2
The idea is to allow reuse in n_d_create_with_config. This is
primarily code movement, with some changes in error messages to reduce
the number of input parameters.
---
 lib/open.cc | 115 +++++++++++++++++++++++++++++++---------------------
 1 file changed, 68 insertions(+), 47 deletions(-)

diff --git a/lib/open.cc b/lib/open.cc
index 6a5c99dd..d052f95d 100644
--- a/lib/open.cc
+++ b/lib/open.cc
@@ -249,54 +249,18 @@ static void _init_libs () {
     }
 }
 
-notmuch_status_t
-notmuch_database_open_with_config (const char *database_path,
-   notmuch_database_mode_t mode,
-   const char *config_path,
-   const char *profile,
-   notmuch_database_t **database,
-   char **status_string)
+static notmuch_status_t
+_finish_open (notmuch_database_t *notmuch,
+      const char *profile,
+      notmuch_database_mode_t mode,
+      GKeyFile *key_file,
+      char **message_ptr)
 {
     notmuch_status_t status = NOTMUCH_STATUS_SUCCESS;
-    void *local = talloc_new (NULL);
-    notmuch_database_t *notmuch = NULL;
-    char *notmuch_path, *incompat_features;
+    char *incompat_features;
     char *message = NULL;
     unsigned int version;
-    GKeyFile *key_file = NULL;
-
-    _init_libs ();
-
-    notmuch = _alloc_notmuch ();
-    if (!notmuch) {
- status = NOTMUCH_STATUS_OUT_OF_MEMORY;
- goto DONE;
-    }
-
-    if ((status = _choose_database_path (config_path, profile, &key_file, &database_path, &message)))
- goto DONE;
-
-    _set_database_path (notmuch, database_path);
-
-    status = _db_dir_exists (database_path, &message);
-    if (status)
-        goto DONE;
-
-    if (! (notmuch_path = talloc_asprintf (local, "%s/%s", database_path, ".notmuch"))) {
- message = strdup ("Out of memory\n");
- status = NOTMUCH_STATUS_OUT_OF_MEMORY;
- goto DONE;
-    }
-
-    status = _db_dir_exists (notmuch_path, &message);
-    if (status)
-        goto DONE;
-
-    if (! (notmuch->xapian_path = talloc_asprintf (local, "%s/%s", notmuch_path, "xapian"))) {
- message = strdup ("Out of memory\n");
- status = NOTMUCH_STATUS_OUT_OF_MEMORY;
- goto DONE;
-    }
+    const char *database_path = notmuch_database_get_path (notmuch);
 
     try {
  std::string last_thread_id;
@@ -319,7 +283,7 @@ notmuch_database_open_with_config (const char *database_path,
      "Error: Notmuch database at %s\n"
      "       has a newer database format version (%u) than supported by this\n"
      "       version of notmuch (%u).\n",
-     notmuch_path, version, NOTMUCH_DATABASE_VERSION));
+     database_path, version, NOTMUCH_DATABASE_VERSION));
     notmuch_database_destroy (notmuch);
     notmuch = NULL;
     status = NOTMUCH_STATUS_FILE_ERROR;
@@ -329,7 +293,7 @@ notmuch_database_open_with_config (const char *database_path,
  /* Check features. */
  incompat_features = NULL;
  notmuch->features = _notmuch_database_parse_features (
-    local, notmuch->xapian_db->get_metadata ("features").c_str (),
+    notmuch, notmuch->xapian_db->get_metadata ("features").c_str (),
     version, mode == NOTMUCH_DATABASE_MODE_READ_WRITE ? 'w' : 'r',
     &incompat_features);
  if (incompat_features) {
@@ -337,7 +301,7 @@ notmuch_database_open_with_config (const char *database_path,
      "Error: Notmuch database at %s\n"
      "       requires features (%s)\n"
      "       not supported by this version of notmuch.\n",
-     notmuch_path, incompat_features));
+     database_path, incompat_features));
     notmuch_database_destroy (notmuch);
     notmuch = NULL;
     status = NOTMUCH_STATUS_FILE_ERROR;
@@ -415,6 +379,63 @@ notmuch_database_open_with_config (const char *database_path,
  notmuch = NULL;
  status = NOTMUCH_STATUS_XAPIAN_EXCEPTION;
     }
+ DONE:
+    if (message_ptr)
+ *message_ptr = message;
+    return status;
+}
+
+notmuch_status_t
+notmuch_database_open_with_config (const char *database_path,
+   notmuch_database_mode_t mode,
+   const char *config_path,
+   const char *profile,
+   notmuch_database_t **database,
+   char **status_string)
+{
+    notmuch_status_t status = NOTMUCH_STATUS_SUCCESS;
+    void *local = talloc_new (NULL);
+    notmuch_database_t *notmuch = NULL;
+    char *notmuch_path;
+    char *message = NULL;
+    struct stat st;
+    int err;
+    GKeyFile *key_file = NULL;
+
+    _init_libs ();
+
+    notmuch = _alloc_notmuch ();
+    if (!notmuch) {
+ status = NOTMUCH_STATUS_OUT_OF_MEMORY;
+ goto DONE;
+    }
+
+    if ((status = _choose_database_path (config_path, profile, &key_file, &database_path, &message)))
+ goto DONE;
+
+    _set_database_path (notmuch, database_path);
+
+    status = _db_dir_exists (database_path, &message);
+    if (status)
+        goto DONE;
+
+    if (! (notmuch_path = talloc_asprintf (local, "%s/%s", database_path, ".notmuch"))) {
+ message = strdup ("Out of memory\n");
+ status = NOTMUCH_STATUS_OUT_OF_MEMORY;
+ goto DONE;
+    }
+
+    status = _db_dir_exists (notmuch_path, &message);
+    if (status)
+        goto DONE;
+
+    if (! (notmuch->xapian_path = talloc_asprintf (local, "%s/%s", notmuch_path, "xapian"))) {
+ message = strdup ("Out of memory\n");
+ status = NOTMUCH_STATUS_OUT_OF_MEMORY;
+ goto DONE;
+    }
+
+    status = _finish_open (notmuch, profile, mode, key_file, &message);
 
   DONE:
     talloc_free (local);
--
2.30.0
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[PATCH 11/21] lib/open: use _finish_open in n_d_create_with_config

In reply to this post by David Bremner-2
This avoids reading the configuration file twice.
---
 lib/open.cc | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/lib/open.cc b/lib/open.cc
index d052f95d..ebf70c15 100644
--- a/lib/open.cc
+++ b/lib/open.cc
@@ -429,8 +429,7 @@ notmuch_database_open_with_config (const char *database_path,
     if (status)
         goto DONE;
 
-    if (! (notmuch->xapian_path = talloc_asprintf (local, "%s/%s", notmuch_path, "xapian"))) {
- message = strdup ("Out of memory\n");
+    if (! (notmuch->xapian_path = talloc_asprintf (notmuch, "%s/%s", notmuch_path, "xapian"))) {
  status = NOTMUCH_STATUS_OUT_OF_MEMORY;
  goto DONE;
     }
@@ -531,12 +530,16 @@ notmuch_database_create_with_config (const char *database_path,
  goto DONE;
     }
 
-    /* XXX this reads the config file twice, which is a bit wasteful */
-    status = notmuch_database_open_with_config (database_path,
- NOTMUCH_DATABASE_MODE_READ_WRITE,
- config_path,
- profile,
- &notmuch, &message);
+    if (! (notmuch->xapian_path = talloc_asprintf (notmuch, "%s/%s", notmuch_path, "xapian"))) {
+ status = NOTMUCH_STATUS_OUT_OF_MEMORY;
+ goto DONE;
+    }
+
+    status = _finish_open (notmuch,
+   profile,
+   NOTMUCH_DATABASE_MODE_READ_WRITE,
+   key_file,
+   &message);
     if (status)
  goto DONE;
 
--
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[PATCH 12/21] lib/open: Use check for existing database by trial opening

In reply to this post by David Bremner-2
This is a bit heavyweight for now, but it will make more sense when we
check multiple locations for the xapian database.
---
 lib/open.cc                | 67 +++++++++++++++++++++++++++-----------
 test/T360-symbol-hiding.sh |  2 +-
 2 files changed, 49 insertions(+), 20 deletions(-)

diff --git a/lib/open.cc b/lib/open.cc
index ebf70c15..4e8ab3b4 100644
--- a/lib/open.cc
+++ b/lib/open.cc
@@ -223,6 +223,49 @@ notmuch_database_t * _alloc_notmuch() {
     return notmuch;
 }
 
+static notmuch_status_t
+_trial_open (const char *xapian_path, char **message_ptr)
+{
+    try {
+ Xapian::Database db(xapian_path);
+    } catch (const Xapian::DatabaseOpeningError &error) {
+ IGNORE_RESULT (asprintf (message_ptr,
+ "Cannot open Xapian database at %s: %s\n",
+ xapian_path,
+ error.get_msg ().c_str ()));
+ return NOTMUCH_STATUS_PATH_ERROR;
+    } catch (const Xapian::Error &error) {
+ IGNORE_RESULT (asprintf (message_ptr,
+ "A Xapian exception occurred opening database: %s\n",
+ error.get_msg ().c_str ()));
+ return NOTMUCH_STATUS_XAPIAN_EXCEPTION;
+    }
+    return NOTMUCH_STATUS_SUCCESS;
+}
+
+static notmuch_status_t
+_choose_xapian_path (void *ctx, const char *database_path, const char **xapian_path, char **message_ptr){
+    notmuch_status_t status;
+    const char *trial_path, *notmuch_path;
+
+    status = _db_dir_exists (database_path, message_ptr);
+    if (status)
+ goto DONE;
+
+    notmuch_path = talloc_asprintf (ctx, "%s/.notmuch", database_path);
+    status = _db_dir_exists (notmuch_path, message_ptr);
+    if (status)
+ goto DONE;
+
+    trial_path = talloc_asprintf (ctx, "%s/xapian", notmuch_path);
+    status = _trial_open (trial_path, message_ptr);
+
+ DONE:
+    if (status == NOTMUCH_STATUS_SUCCESS)
+ *xapian_path = trial_path;
+    return status;
+}
+
 static void
 _set_database_path (notmuch_database_t *notmuch,
           const char *database_path) {
@@ -396,10 +439,7 @@ notmuch_database_open_with_config (const char *database_path,
     notmuch_status_t status = NOTMUCH_STATUS_SUCCESS;
     void *local = talloc_new (NULL);
     notmuch_database_t *notmuch = NULL;
-    char *notmuch_path;
     char *message = NULL;
-    struct stat st;
-    int err;
     GKeyFile *key_file = NULL;
 
     _init_libs ();
@@ -413,26 +453,15 @@ notmuch_database_open_with_config (const char *database_path,
     if ((status = _choose_database_path (config_path, profile, &key_file, &database_path, &message)))
  goto DONE;
 
-    _set_database_path (notmuch, database_path);
-
     status = _db_dir_exists (database_path, &message);
     if (status)
-        goto DONE;
-
-    if (! (notmuch_path = talloc_asprintf (local, "%s/%s", database_path, ".notmuch"))) {
- message = strdup ("Out of memory\n");
- status = NOTMUCH_STATUS_OUT_OF_MEMORY;
  goto DONE;
-    }
 
-    status = _db_dir_exists (notmuch_path, &message);
-    if (status)
-        goto DONE;
+    _set_database_path (notmuch, database_path);
 
-    if (! (notmuch->xapian_path = talloc_asprintf (notmuch, "%s/%s", notmuch_path, "xapian"))) {
- status = NOTMUCH_STATUS_OUT_OF_MEMORY;
+    status = _choose_xapian_path (local, database_path, &notmuch->xapian_path, &message);
+    if (status)
  goto DONE;
-    }
 
     status = _finish_open (notmuch, profile, mode, key_file, &message);
 
@@ -500,7 +529,7 @@ notmuch_database_create_with_config (const char *database_path,
     _init_libs ();
 
     notmuch = _alloc_notmuch ();
-    if (!notmuch) {
+    if (! notmuch) {
  status = NOTMUCH_STATUS_OUT_OF_MEMORY;
  goto DONE;
     }
@@ -510,7 +539,7 @@ notmuch_database_create_with_config (const char *database_path,
 
     status = _db_dir_exists (database_path, &message);
     if (status)
-        goto DONE;
+ goto DONE;
 
     _set_database_path (notmuch, database_path);
 
diff --git a/test/T360-symbol-hiding.sh b/test/T360-symbol-hiding.sh
index 729b9d72..642457bf 100755
--- a/test/T360-symbol-hiding.sh
+++ b/test/T360-symbol-hiding.sh
@@ -17,7 +17,7 @@ $TEST_DIRECTORY/symbol-test ${PWD}/fakedb ${PWD}/nonexistent 2>&1 \
  | notmuch_dir_sanitize | sed -e "s,\`,\',g" -e "s,No [^[:space:]]* database,No XXXXXX database,g" > OUTPUT
 
 cat <<EOF > EXPECTED
-A Xapian exception occurred opening database: Couldn't stat 'CWD/fakedb/.notmuch/xapian'
+Cannot open Xapian database at CWD/fakedb/.notmuch/xapian: Couldn't stat 'CWD/fakedb/.notmuch/xapian'
 caught No XXXXXX database found at path 'CWD/nonexistent'
 EOF
 test_expect_equal_file EXPECTED OUTPUT
--
2.30.0
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[PATCH 13/21] support splitting mail from database location.

In reply to this post by David Bremner-2
Introduce a new configuration value for the mail root, and use it in
preference to the database.path (which previously implied the mail was
also in this location.

Further changes to the CLI will be needed to work in this split
configuration.
---
 doc/man1/notmuch-config.rst | 14 ++++--
 lib/config.cc               | 11 +++--
 lib/database.cc             |  2 +-
 lib/message-file.c          |  2 +-
 lib/message.cc              |  2 +-
 lib/notmuch.h               |  1 +
 lib/open.cc                 |  5 +++
 test/T055-path-config.sh    | 90 +++++++++++++++++++++++++++++++++++++
 test/T590-libconfig.sh      |  1 +
 9 files changed, 119 insertions(+), 9 deletions(-)
 create mode 100755 test/T055-path-config.sh

diff --git a/doc/man1/notmuch-config.rst b/doc/man1/notmuch-config.rst
index bc597957..99030a41 100644
--- a/doc/man1/notmuch-config.rst
+++ b/doc/man1/notmuch-config.rst
@@ -43,12 +43,20 @@ configuration file and corresponding database.
 The available configuration items are described below.
 
 **database.path**
+    Notmuch will store its database within a
+    sub-directory of the path configured here named ``.notmuch``.
+
+    Default: ``$MAILDIR`` variable if set, otherwise ``$HOME/mail``.
+
+**database.mail_root**
     The top-level directory where your mail currently exists and to
     where mail will be delivered in the future. Files should be
-    individual email messages. Notmuch will store its database within
-    a sub-directory of the path configured here named ``.notmuch``.
+    individual email messages.
 
-    Default: ``$MAILDIR`` variable if set, otherwise ``$HOME/mail``.
+    History: this configuration value was introduced in notmuch 0.32.
+
+    Default: For compatibility with older configurations, the value of
+    database.path is used if database.mail\_root is unset.
 
 **database.hook_dir**
 
diff --git a/lib/config.cc b/lib/config.cc
index 99b75e7b..3b8f1092 100644
--- a/lib/config.cc
+++ b/lib/config.cc
@@ -390,6 +390,8 @@ _notmuch_config_key_to_string (notmuch_config_key_t key) {
     switch (key) {
     case NOTMUCH_CONFIG_DATABASE_PATH:
  return "database.path";
+    case NOTMUCH_CONFIG_MAIL_ROOT:
+ return "database.mail_root";
     case NOTMUCH_CONFIG_HOOK_DIR:
  return "database.hook_dir";
     case NOTMUCH_CONFIG_EXCLUDE_TAGS:
@@ -412,18 +414,21 @@ _notmuch_config_key_to_string (notmuch_config_key_t key) {
 }
 
 static const char *
-_notmuch_config_default (void *ctx, notmuch_config_key_t key) {
+_notmuch_config_default (notmuch_database_t *notmuch, notmuch_config_key_t key) {
     char *path;
 
     switch (key) {
     case NOTMUCH_CONFIG_DATABASE_PATH:
  path = getenv ("MAILDIR");
  if (path)
-    path = talloc_strdup (ctx, path);
+    path = talloc_strdup (notmuch, path);
  else
-    path = talloc_asprintf (ctx, "%s/mail",
+    path = talloc_asprintf (notmuch, "%s/mail",
     getenv ("HOME"));
  return path;
+    case NOTMUCH_CONFIG_MAIL_ROOT:
+ /* by default, mail root is the same as database path */
+ return notmuch_database_get_path (notmuch);
     case NOTMUCH_CONFIG_EXCLUDE_TAGS:
  return "";
     case NOTMUCH_CONFIG_NEW_TAGS:
diff --git a/lib/database.cc b/lib/database.cc
index afa8b754..1d8839a5 100644
--- a/lib/database.cc
+++ b/lib/database.cc
@@ -1345,7 +1345,7 @@ _notmuch_database_relative_path (notmuch_database_t *notmuch,
     const char *db_path, *relative;
     unsigned int db_path_len;
 
-    db_path = notmuch_database_get_path (notmuch);
+    db_path = notmuch_config_get (notmuch, NOTMUCH_CONFIG_MAIL_ROOT);
     db_path_len = strlen (db_path);
 
     relative = path;
diff --git a/lib/message-file.c b/lib/message-file.c
index 311bd478..a23493f1 100644
--- a/lib/message-file.c
+++ b/lib/message-file.c
@@ -64,7 +64,7 @@ _notmuch_message_file_open_ctx (notmuch_database_t *notmuch,
     if (unlikely (message == NULL))
  return NULL;
 
-    const char *prefix = notmuch_database_get_path (notmuch);
+    const char *prefix = notmuch_config_get (notmuch, NOTMUCH_CONFIG_MAIL_ROOT);
     if (prefix == NULL)
  goto FAIL;
 
diff --git a/lib/message.cc b/lib/message.cc
index 1bea90f0..35f0b87a 100644
--- a/lib/message.cc
+++ b/lib/message.cc
@@ -1098,7 +1098,7 @@ _notmuch_message_ensure_filename_list (notmuch_message_t *message)
 
  *colon = '\0';
 
- db_path = notmuch_database_get_path (message->notmuch);
+ db_path = notmuch_config_get (message->notmuch, NOTMUCH_CONFIG_MAIL_ROOT);
 
  directory = _notmuch_database_get_directory_path (local,
   message->notmuch,
diff --git a/lib/notmuch.h b/lib/notmuch.h
index 37d7581f..374d3af9 100644
--- a/lib/notmuch.h
+++ b/lib/notmuch.h
@@ -2473,6 +2473,7 @@ notmuch_config_list_destroy (notmuch_config_list_t *config_list);
 typedef enum _notmuch_config_key {
     NOTMUCH_CONFIG_FIRST,
     NOTMUCH_CONFIG_DATABASE_PATH = NOTMUCH_CONFIG_FIRST,
+    NOTMUCH_CONFIG_MAIL_ROOT,
     NOTMUCH_CONFIG_HOOK_DIR,
     NOTMUCH_CONFIG_EXCLUDE_TAGS,
     NOTMUCH_CONFIG_NEW_TAGS,
diff --git a/lib/open.cc b/lib/open.cc
index 4e8ab3b4..2f65198d 100644
--- a/lib/open.cc
+++ b/lib/open.cc
@@ -252,6 +252,11 @@ _choose_xapian_path (void *ctx, const char *database_path, const char **xapian_p
     if (status)
  goto DONE;
 
+    trial_path = talloc_asprintf (ctx, "%s/xapian", database_path);
+    status = _trial_open (trial_path, message_ptr);
+    if (status != NOTMUCH_STATUS_PATH_ERROR)
+ goto DONE;
+
     notmuch_path = talloc_asprintf (ctx, "%s/.notmuch", database_path);
     status = _db_dir_exists (notmuch_path, message_ptr);
     if (status)
diff --git a/test/T055-path-config.sh b/test/T055-path-config.sh
new file mode 100755
index 00000000..c6920ca9
--- /dev/null
+++ b/test/T055-path-config.sh
@@ -0,0 +1,90 @@
+#!/usr/bin/env bash
+test_description='Configuration of mail-root and database path'
+. $(dirname "$0")/test-lib.sh || exit 1
+
+backup_config () {
+    local test_name=$(basename $0 .sh)
+    cp ${NOTMUCH_CONFIG} notmuch-config-backup.${test_name}
+}
+
+restore_config () {
+    local test_name=$(basename $0 .sh)
+    export NOTMUCH_CONFIG="${TMP_DIRECTORY}/notmuch-config"
+    unset CONFIG_PATH
+    unset DATABASE_PATH
+    unset NOTMUCH_PROFILE
+    cp notmuch-config-backup.${test_name} ${NOTMUCH_CONFIG}
+}
+
+split_config () {
+    local dir
+    backup_config
+    dir="$TMP_DIRECTORY/database.$test_count"
+    rm -rf $dir
+    mkdir $dir
+    notmuch config set database.path $dir
+    notmuch config set database.mail_root $MAIL_DIR
+    DATABASE_PATH=$dir
+}
+
+
+
+for config in traditional split; do
+    # start each set of tests with a known set of messages
+    add_email_corpus
+
+    case $config in
+ traditional)
+    backup_config
+    ;;
+ split)
+    split_config
+    mv mail/.notmuch/xapian $DATABASE_PATH
+    ;;
+    esac
+
+    test_begin_subtest "count ($config)"
+    output=$(notmuch count '*')
+    test_expect_equal "$output" '52'
+
+    test_begin_subtest "count+tag ($config)"
+    tag="tag${RANDOM}"
+    notmuch tag +$tag '*'
+    output=$(notmuch count tag:$tag)
+    notmuch tag -$tag '*'
+    test_expect_equal "$output" '52'
+
+    test_begin_subtest "address ($config)"
+    notmuch address --deduplicate=no --sort=newest-first --output=sender --output=recipients path:foo >OUTPUT
+    cat <<EOF >EXPECTED
+Carl Worth <[hidden email]>
+[hidden email]
+EOF
+    test_expect_equal_file EXPECTED OUTPUT
+
+    test_begin_subtest "dump ($config)"
+    notmuch dump is:attachment and is:signed | sort > OUTPUT
+    cat <<EOF > EXPECTED
+#notmuch-dump batch-tag:3 config,properties,tags
++attachment +inbox +signed +unread -- id:[hidden email]
++attachment +inbox +signed +unread -- id:[hidden email]
+EOF
+    test_expect_equal_file EXPECTED OUTPUT
+
+    test_begin_subtest "dump + tag + restore ($config)"
+    notmuch dump '*' > EXPECTED
+    notmuch tag -inbox '*'
+    notmuch restore < EXPECTED
+    notmuch dump > OUTPUT
+    test_expect_equal_file EXPECTED OUTPUT
+
+    test_begin_subtest "reindex ($config)"
+    notmuch search --output=messages '*' > EXPECTED
+    notmuch reindex '*'
+    notmuch search --output=messages '*' > OUTPUT
+    test_expect_equal_file EXPECTED OUTPUT
+
+    restore_config
+done
+
+test_done
diff --git a/test/T590-libconfig.sh b/test/T590-libconfig.sh
index 4e510e97..5cf70987 100755
--- a/test/T590-libconfig.sh
+++ b/test/T590-libconfig.sh
@@ -364,6 +364,7 @@ EOF
 cat <<'EOF' >EXPECTED
 == stdout ==
 MAIL_DIR
+MAIL_DIR
 MAIL_DIR/.notmuch/hooks
 
 inbox;unread
--
2.30.0
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[PATCH 14/21] lib/open: check for split configuration when creating database.

In reply to this post by David Bremner-2
This will be tested when notmuch-new is converted to support split
configuration.
---
 lib/open.cc              | 53 ++++++++++++++++++++++++++++++----------
 test/T055-path-config.sh | 15 ++++++++++--
 2 files changed, 53 insertions(+), 15 deletions(-)

diff --git a/lib/open.cc b/lib/open.cc
index 2f65198d..0b3b9ca4 100644
--- a/lib/open.cc
+++ b/lib/open.cc
@@ -525,11 +525,12 @@ notmuch_database_create_with_config (const char *database_path,
 {
     notmuch_status_t status = NOTMUCH_STATUS_SUCCESS;
     notmuch_database_t *notmuch = NULL;
-    char *notmuch_path = NULL;
+    const char *notmuch_path = NULL;
     char *message = NULL;
     GKeyFile *key_file = NULL;
     void *local = talloc_new (NULL);
     int err;
+    bool split = false;
 
     _init_libs ();
 
@@ -548,20 +549,38 @@ notmuch_database_create_with_config (const char *database_path,
 
     _set_database_path (notmuch, database_path);
 
-    notmuch_path = talloc_asprintf (local, "%s/%s", database_path, ".notmuch");
+    if (key_file && !split) {
+ char *mail_root = canonicalize_file_name (
+    g_key_file_get_value (key_file, "database", "mail_root", NULL));
+ char *db_path = canonicalize_file_name (database_path);
 
-    err = mkdir (notmuch_path, 0755);
-    if (err) {
- if (errno == EEXIST) {
-    status = NOTMUCH_STATUS_DATABASE_EXISTS;
-    talloc_free (notmuch);
-    notmuch = NULL;
- } else {
-    IGNORE_RESULT (asprintf (&message, "Error: Cannot create directory %s: %s.\n",
-     notmuch_path, strerror (errno)));
-    status = NOTMUCH_STATUS_FILE_ERROR;
+ split = (mail_root && (0 != strcmp (mail_root, db_path)));
+
+ free(mail_root);
+ free (db_path);
+    }
+
+    if (split) {
+ notmuch_path = database_path;
+    } else {
+ if (! (notmuch_path = talloc_asprintf (local, "%s/%s", database_path, ".notmuch"))) {
+    status = NOTMUCH_STATUS_OUT_OF_MEMORY;
+    goto DONE;
+ }
+
+ err = mkdir (notmuch_path, 0755);
+ if (err) {
+    if (errno == EEXIST) {
+ status = NOTMUCH_STATUS_DATABASE_EXISTS;
+ talloc_free (notmuch);
+ notmuch = NULL;
+    } else {
+ IGNORE_RESULT (asprintf (&message, "Error: Cannot create directory %s: %s.\n",
+ notmuch_path, strerror (errno)));
+ status = NOTMUCH_STATUS_FILE_ERROR;
+    }
+    goto DONE;
  }
- goto DONE;
     }
 
     if (! (notmuch->xapian_path = talloc_asprintf (notmuch, "%s/%s", notmuch_path, "xapian"))) {
@@ -569,6 +588,14 @@ notmuch_database_create_with_config (const char *database_path,
  goto DONE;
     }
 
+    status = _trial_open (notmuch->xapian_path, &message);
+    if (status == NOTMUCH_STATUS_SUCCESS) {
+ notmuch_database_destroy (notmuch);
+ notmuch = NULL;
+ status = NOTMUCH_STATUS_DATABASE_EXISTS;
+ goto DONE;
+    }
+
     status = _finish_open (notmuch,
    profile,
    NOTMUCH_DATABASE_MODE_READ_WRITE,
diff --git a/test/T055-path-config.sh b/test/T055-path-config.sh
index c6920ca9..19a8a4ab 100755
--- a/test/T055-path-config.sh
+++ b/test/T055-path-config.sh
@@ -27,9 +27,17 @@ split_config () {
     DATABASE_PATH=$dir
 }
 
+symlink_config () {
+    local dir
+    backup_config
+    dir="$TMP_DIRECTORY/link.$test_count"
+    ln -s $MAIL_DIR $dir
+    notmuch config set database.path $dir
+    notmuch config set database.mail_root $MAIL_DIR
+    unset DATABASE_PATH
+}
 
-
-for config in traditional split; do
+for config in traditional split symlink; do
     # start each set of tests with a known set of messages
     add_email_corpus
 
@@ -41,6 +49,9 @@ for config in traditional split; do
     split_config
     mv mail/.notmuch/xapian $DATABASE_PATH
     ;;
+ symlink)
+    symlink_config
+    ;;
     esac
 
     test_begin_subtest "count ($config)"
--
2.30.0
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[PATCH 15/21] CLI/new: support split database and mail location

In reply to this post by David Bremner-2
This adds new state variable for the mail root, and uses it most
places db_path was used. The notable exception is dumps from backups.
---
 notmuch-new.c            | 54 ++++++++++++++++++++++++++--------------
 test/T055-path-config.sh | 41 ++++++++++++++++++++++++++++++
 2 files changed, 76 insertions(+), 19 deletions(-)

diff --git a/notmuch-new.c b/notmuch-new.c
index 21e66af1..63ac10a6 100644
--- a/notmuch-new.c
+++ b/notmuch-new.c
@@ -43,6 +43,7 @@ enum verbosity {
 
 typedef struct {
     const char *db_path;
+    const char *mail_root;
 
     int output_is_a_tty;
     enum verbosity verbosity;
@@ -307,18 +308,18 @@ _setup_ignore (notmuch_database_t *notmuch, add_files_state_t *state)
 }
 
 static char *
-_get_relative_path (const char *db_path, const char *dirpath, const char *entry)
+_get_relative_path (const char *mail_root, const char *dirpath, const char *entry)
 {
-    size_t db_path_len = strlen (db_path);
+    size_t mail_root_len = strlen (mail_root);
 
     /* paranoia? */
-    if (strncmp (dirpath, db_path, db_path_len) != 0) {
+    if (strncmp (dirpath, mail_root, mail_root_len) != 0) {
  fprintf (stderr, "Warning: '%s' is not a subdirectory of '%s'\n",
- dirpath, db_path);
+ dirpath, mail_root);
  return NULL;
     }
 
-    dirpath += db_path_len;
+    dirpath += mail_root_len;
     while (*dirpath == '/')
  dirpath++;
 
@@ -346,7 +347,7 @@ _entry_in_ignore_list (add_files_state_t *state, const char *dirpath,
     if (state->ignore_regex_length == 0)
  return false;
 
-    path = _get_relative_path (state->db_path, dirpath, entry);
+    path = _get_relative_path (state->mail_root, dirpath, entry);
     if (! path)
  return false;
 
@@ -1047,22 +1048,34 @@ _maybe_upgrade (notmuch_database_t *notmuch, add_files_state_t *state) {
     if (notmuch_database_needs_upgrade (notmuch)) {
  time_t now = time (NULL);
  struct tm *gm_time = gmtime (&now);
+ struct stat st;
+ int err;
  notmuch_status_t status;
  char *dot_notmuch_path = talloc_asprintf (notmuch, "%s/%s", state->db_path, ".notmuch");
 
+ const char *backup_name;
+
+ err = stat(dot_notmuch_path, &st);
+ if (err) {
+    if (errno == ENOENT) {
+ dot_notmuch_path = NULL;
+    } else {
+ fprintf(stderr, "Failed to stat %s: %s\n", dot_notmuch_path, strerror(errno));
+ return EXIT_FAILURE;
+    }
+ }
+
  /* since dump files are written atomically, the amount of
  * harm from overwriting one within a second seems
  * relatively small. */
-
- const char *backup_name =
-    talloc_asprintf (notmuch, "%s/dump-%04d%02d%02dT%02d%02d%02d.gz",
-     dot_notmuch_path,
-     gm_time->tm_year + 1900,
-     gm_time->tm_mon + 1,
-     gm_time->tm_mday,
-     gm_time->tm_hour,
-     gm_time->tm_min,
-     gm_time->tm_sec);
+ backup_name = talloc_asprintf (notmuch, "%s/dump-%04d%02d%02dT%02d%02d%02d.gz",
+       dot_notmuch_path ? dot_notmuch_path : state->db_path,
+       gm_time->tm_year + 1900,
+       gm_time->tm_mon + 1,
+       gm_time->tm_mday,
+       gm_time->tm_hour,
+       gm_time->tm_min,
+       gm_time->tm_sec);
 
  if (state->verbosity >= VERBOSITY_NORMAL) {
     printf ("Welcome to a new version of notmuch! Your database will now be upgraded.\n");
@@ -1104,7 +1117,7 @@ notmuch_new_command (unused(notmuch_config_t *config), notmuch_database_t *notmu
     };
     struct timeval tv_start;
     int ret = 0;
-    const char *db_path;
+    const char *db_path, *mail_root;
     struct sigaction action;
     _filename_node_t *f;
     int opt_index;
@@ -1149,6 +1162,9 @@ notmuch_new_command (unused(notmuch_config_t *config), notmuch_database_t *notmu
     db_path = notmuch_config_get (notmuch, NOTMUCH_CONFIG_DATABASE_PATH);
     add_files_state.db_path = db_path;
 
+    mail_root = notmuch_config_get (notmuch, NOTMUCH_CONFIG_MAIL_ROOT);
+    add_files_state.mail_root = mail_root;
+
     if (! _setup_ignore (notmuch, &add_files_state))
  return EXIT_FAILURE;
 
@@ -1175,7 +1191,7 @@ notmuch_new_command (unused(notmuch_config_t *config), notmuch_database_t *notmu
 
     if (notmuch_database_get_revision (notmuch, NULL) == 0) {
  int count = 0;
- count_files (db_path, &count, &add_files_state);
+ count_files (mail_root, &count, &add_files_state);
  if (interrupted)
     return EXIT_FAILURE;
 
@@ -1221,7 +1237,7 @@ notmuch_new_command (unused(notmuch_config_t *config), notmuch_database_t *notmu
  timer_is_active = true;
     }
 
-    ret = add_files (notmuch, db_path, &add_files_state);
+    ret = add_files (notmuch, mail_root, &add_files_state);
     if (ret)
  goto DONE;
 
diff --git a/test/T055-path-config.sh b/test/T055-path-config.sh
index 19a8a4ab..6df17f80 100755
--- a/test/T055-path-config.sh
+++ b/test/T055-path-config.sh
@@ -95,6 +95,47 @@ EOF
     notmuch search --output=messages '*' > OUTPUT
     test_expect_equal_file EXPECTED OUTPUT
 
+    test_begin_subtest "use existing database ($config)"
+    output=$(notmuch new)
+    test_expect_equal "$output" 'No new mail.'
+
+    test_begin_subtest "create database ($config)"
+    rm -rf $DATABASE_PATH/{.notmuch,}/xapian
+    notmuch new
+    output=$(notmuch count '*')
+    test_expect_equal "$output" '52'
+
+    test_begin_subtest "detect new files ($config)"
+    generate_message
+    generate_message
+    notmuch new
+    output=$(notmuch count '*')
+    test_expect_equal "$output" '54'
+
+    test_begin_subtest "Show a raw message ($config)"
+    add_message
+    notmuch show --format=raw id:$gen_msg_id > OUTPUT
+    test_expect_equal_file $gen_msg_filename OUTPUT
+    rm -f $gen_msg_filename
+
+    test_begin_subtest "reply ($config)"
+    add_message '[from]="Sender <[hidden email]>"' \
+ [to]=[hidden email] \
+ [subject]=notmuch-reply-test \
+ '[date]="Tue, 05 Jan 2010 15:43:56 -0000"' \
+ '[body]="basic reply test"'
+    notmuch reply id:${gen_msg_id} 2>&1 > OUTPUT
+    cat <<EOF > EXPECTED
+From: Notmuch Test Suite <[hidden email]>
+Subject: Re: notmuch-reply-test
+To: Sender <[hidden email]>
+In-Reply-To: <${gen_msg_id}>
+References: <${gen_msg_id}>
+
+On Tue, 05 Jan 2010 15:43:56 -0000, Sender <[hidden email]> wrote:
+> basic reply test
+EOF
+    test_expect_equal_file EXPECTED OUTPUT
     restore_config
 done
 
--
2.30.0
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[PATCH 16/21] lib/open: support XDG_DATA_HOME as a fallback database location.

In reply to this post by David Bremner-2
This changes some error reporting, either intentionally by reporting
the highest level missing directory, or by side effect from looking in
XDG locations when given null database location.
---
 lib/open.cc              | 18 +++++++++++++++---
 test/T055-path-config.sh | 35 +++++++++++++++++++++++++++++++++--
 test/T560-lib-error.sh   |  4 ++--
 test/T590-libconfig.sh   |  4 ++--
 4 files changed, 52 insertions(+), 9 deletions(-)

diff --git a/lib/open.cc b/lib/open.cc
index 0b3b9ca4..a21f6252 100644
--- a/lib/open.cc
+++ b/lib/open.cc
@@ -176,10 +176,12 @@ _db_dir_exists (const char *database_path, char **message)
 }
 
 static notmuch_status_t
-_choose_database_path (const char *config_path,
+_choose_database_path (void * ctx,
+                       const char *config_path,
        const char *profile,
        GKeyFile **key_file,
        const char **database_path,
+       bool *split,
        char **message)
 {
     notmuch_status_t status;
@@ -197,6 +199,11 @@ _choose_database_path (const char *config_path,
     if (! *database_path && *key_file)
  *database_path = g_key_file_get_value (*key_file, "database", "path", NULL);
 
+    if (! *database_path) {
+ *database_path = _xdg_dir (ctx, "XDG_DATA_HOME", ".local/share", profile);
+ *split = true;
+    }
+
     if (*database_path == NULL) {
  *message = strdup ("Error: Cannot open a database for a NULL path.\n");
  return NOTMUCH_STATUS_NULL_POINTER;
@@ -446,6 +453,7 @@ notmuch_database_open_with_config (const char *database_path,
     notmuch_database_t *notmuch = NULL;
     char *message = NULL;
     GKeyFile *key_file = NULL;
+    bool split = false;
 
     _init_libs ();
 
@@ -455,7 +463,9 @@ notmuch_database_open_with_config (const char *database_path,
  goto DONE;
     }
 
-    if ((status = _choose_database_path (config_path, profile, &key_file, &database_path, &message)))
+    if ((status = _choose_database_path (local, config_path, profile,
+ &key_file, &database_path, &split,
+ &message)))
  goto DONE;
 
     status = _db_dir_exists (database_path, &message);
@@ -540,7 +550,9 @@ notmuch_database_create_with_config (const char *database_path,
  goto DONE;
     }
 
-    if ((status = _choose_database_path (config_path, profile, &key_file, &database_path, &message)))
+    if ((status = _choose_database_path (local, config_path, profile,
+ &key_file, &database_path, &split,
+ &message)))
  goto DONE;
 
     status = _db_dir_exists (database_path, &message);
diff --git a/test/T055-path-config.sh b/test/T055-path-config.sh
index 6df17f80..f9a8e200 100755
--- a/test/T055-path-config.sh
+++ b/test/T055-path-config.sh
@@ -37,8 +37,31 @@ symlink_config () {
     unset DATABASE_PATH
 }
 
-for config in traditional split symlink; do
-    # start each set of tests with a known set of messages
+xdg_config () {
+    local dir
+    local profile=${1:-default}
+
+    if [[ $profile != default ]]; then
+ export NOTMUCH_PROFILE=$profile
+    fi
+
+    backup_config
+    DATABASE_PATH="${HOME}/.local/share/notmuch/${profile}"
+    rm -rf $DATABASE_PATH
+    mkdir -p $DATABASE_PATH
+
+    config_dir="${HOME}/.config/notmuch/${profile}"
+    mkdir -p ${config_dir}
+    CONFIG_PATH=$config_dir/config
+    mv ${NOTMUCH_CONFIG} $CONFIG_PATH
+    unset NOTMUCH_CONFIG
+
+    notmuch --config=${CONFIG_PATH} config set database.mail_root ${TMP_DIRECTORY}/mail
+    notmuch --config=${CONFIG_PATH} config set database.path
+}
+
+for config in traditional split XDG XDG+profile symlink; do
+    #start each set of tests with an known set of messages
     add_email_corpus
 
     case $config in
@@ -49,6 +72,14 @@ for config in traditional split symlink; do
     split_config
     mv mail/.notmuch/xapian $DATABASE_PATH
     ;;
+ XDG)
+    xdg_config
+    mv mail/.notmuch/xapian $DATABASE_PATH
+    ;;
+ XDG+profile)
+    xdg_config ${RANDOM}
+    mv mail/.notmuch/xapian $DATABASE_PATH
+    ;;
  symlink)
     symlink_config
     ;;
diff --git a/test/T560-lib-error.sh b/test/T560-lib-error.sh
index 03df69d9..89447e9a 100755
--- a/test/T560-lib-error.sh
+++ b/test/T560-lib-error.sh
@@ -22,7 +22,7 @@ EOF
 cat <<'EOF' >EXPECTED
 == stdout ==
 == stderr ==
-Error: Cannot open a database for a NULL path.
+Error: Cannot open database at CWD/home/.local/share/notmuch/default: No such file or directory.
 EOF
 test_expect_equal_file EXPECTED OUTPUT
 
@@ -93,7 +93,7 @@ EOF
 cat <<'EOF' >EXPECTED
 == stdout ==
 == stderr ==
-Error: Cannot open a database for a NULL path.
+Error: Cannot open database at CWD/home/.local/share/notmuch/default: No such file or directory.
 EOF
 test_expect_equal_file EXPECTED OUTPUT
 
diff --git a/test/T590-libconfig.sh b/test/T590-libconfig.sh
index 5cf70987..c21c139b 100755
--- a/test/T590-libconfig.sh
+++ b/test/T590-libconfig.sh
@@ -519,8 +519,8 @@ cat <<'EOF' >EXPECTED
 == stdout ==
 == stderr ==
 error opening database
-Erroneous NULL pointer
-Error: Cannot open a database for a NULL path.
+Something went wrong trying to read or write a file
+Error: Cannot open database at CWD/home/.local/share/notmuch/default: No such file or directory.
 
 EOF
 test_expect_equal_file EXPECTED OUTPUT
--
2.30.0
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[PATCH 17/21] CLI/insert: support split database and mail root

In reply to this post by David Bremner-2
The new test is in T055-path-config because it uses the helper
function split_config, and because it seems easier to follow the
database path related tests in one place.
---
 notmuch-insert.c         | 12 +++---------
 test/T055-path-config.sh | 10 ++++++++++
 2 files changed, 13 insertions(+), 9 deletions(-)

diff --git a/notmuch-insert.c b/notmuch-insert.c
index 0f272e2e..38a0dfe6 100644
--- a/notmuch-insert.c
+++ b/notmuch-insert.c
@@ -448,7 +448,7 @@ notmuch_insert_command (unused(notmuch_config_t *config),notmuch_database_t *not
 {
     notmuch_status_t status, close_status;
     struct sigaction action;
-    const char *db_path;
+    const char *mail_root;
     notmuch_config_values_t *new_tags = NULL;
     tag_op_list_t *tag_ops;
     char *query_string = NULL;
@@ -480,13 +480,7 @@ notmuch_insert_command (unused(notmuch_config_t *config),notmuch_database_t *not
 
     notmuch_process_shared_options (argv[0]);
 
-
-    db_path = notmuch_config_get (notmuch, NOTMUCH_CONFIG_DATABASE_PATH);
-
-    if (! db_path)
- INTERNAL_ERROR ("Unable to retrieve database path");
-    else
- db_path = talloc_strdup (local, db_path);
+    mail_root = notmuch_config_get (notmuch, NOTMUCH_CONFIG_MAIL_ROOT);
 
     new_tags = notmuch_config_get_values (notmuch, NOTMUCH_CONFIG_NEW_TAGS);
 
@@ -532,7 +526,7 @@ notmuch_insert_command (unused(notmuch_config_t *config),notmuch_database_t *not
  return EXIT_FAILURE;
     }
 
-    maildir = talloc_asprintf (local, "%s/%s", db_path, folder);
+    maildir = talloc_asprintf (local, "%s/%s", mail_root, folder);
     if (! maildir) {
  fprintf (stderr, "Out of memory\n");
  return EXIT_FAILURE;
diff --git a/test/T055-path-config.sh b/test/T055-path-config.sh
index f9a8e200..fb5174ac 100755
--- a/test/T055-path-config.sh
+++ b/test/T055-path-config.sh
@@ -167,6 +167,16 @@ On Tue, 05 Jan 2010 15:43:56 -0000, Sender <[hidden email]> wrote:
 > basic reply test
 EOF
     test_expect_equal_file EXPECTED OUTPUT
+    test_begin_subtest "insert+search ($config)"
+    generate_message \
+ "[subject]=\"insert-subject\"" \
+ "[date]=\"Sat, 01 Jan 2000 12:00:00 -0000\"" \
+ "[body]=\"insert-message\""
+    mkdir -p "$MAIL_DIR"/{cur,new,tmp}
+    notmuch insert < "$gen_msg_filename"
+    cur_msg_filename=$(notmuch search --output=files "subject:insert-subject")
+    test_expect_equal_file "$cur_msg_filename" "$gen_msg_filename"
+
     restore_config
 done
 
--
2.30.0
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[PATCH 18/21] lib/compact: enable split config

In reply to this post by David Bremner-2
This promotes _choose_xapian_path from static to extern linkage in
order to share between open.cc and database.cc.
---
 lib/database.cc          | 13 ++++---------
 lib/notmuch-private.h    |  4 ++++
 lib/open.cc              |  6 +++---
 test/T055-path-config.sh |  7 +++++++
 4 files changed, 18 insertions(+), 12 deletions(-)

diff --git a/lib/database.cc b/lib/database.cc
index 1d8839a5..ffd42ac4 100644
--- a/lib/database.cc
+++ b/lib/database.cc
@@ -607,11 +607,12 @@ notmuch_database_compact_db (notmuch_database_t *notmuch,
      notmuch_compact_status_cb_t status_cb,
      void *closure) {
     void *local;
-    char *notmuch_path, *xapian_path, *compact_xapian_path;
+    const char *xapian_path, *compact_xapian_path;
     const char* path;
     notmuch_status_t ret = NOTMUCH_STATUS_SUCCESS;
     struct stat statbuf;
     bool keep_backup;
+    char *message;
 
     ret = _notmuch_database_ensure_writable (notmuch);
     if (ret)
@@ -625,15 +626,9 @@ notmuch_database_compact_db (notmuch_database_t *notmuch,
     if (! local)
  return NOTMUCH_STATUS_OUT_OF_MEMORY;
 
-    if (! (notmuch_path = talloc_asprintf (local, "%s/%s", path, ".notmuch"))) {
- ret = NOTMUCH_STATUS_OUT_OF_MEMORY;
- goto DONE;
-    }
-
-    if (! (xapian_path = talloc_asprintf (local, "%s/%s", notmuch_path, "xapian"))) {
- ret = NOTMUCH_STATUS_OUT_OF_MEMORY;
+    ret = _notmuch_choose_xapian_path (local, path, &xapian_path, &message);
+    if (ret)
  goto DONE;
-    }
 
     if (! (compact_xapian_path = talloc_asprintf (local, "%s.compact", xapian_path))) {
  ret = NOTMUCH_STATUS_OUT_OF_MEMORY;
diff --git a/lib/notmuch-private.h b/lib/notmuch-private.h
index 4516061b..f871756d 100644
--- a/lib/notmuch-private.h
+++ b/lib/notmuch-private.h
@@ -726,6 +726,10 @@ _notmuch_config_load_defaults (notmuch_database_t * db);
 void
 _notmuch_config_cache (notmuch_database_t *db, notmuch_config_key_t key, const char* val);
 
+/* open.cc */
+notmuch_status_t
+_notmuch_choose_xapian_path (void *ctx, const char *database_path, const char **xapian_path, char **message);
+
 NOTMUCH_END_DECLS
 
 #ifdef __cplusplus
diff --git a/lib/open.cc b/lib/open.cc
index a21f6252..1e2a62cd 100644
--- a/lib/open.cc
+++ b/lib/open.cc
@@ -250,8 +250,8 @@ _trial_open (const char *xapian_path, char **message_ptr)
     return NOTMUCH_STATUS_SUCCESS;
 }
 
-static notmuch_status_t
-_choose_xapian_path (void *ctx, const char *database_path, const char **xapian_path, char **message_ptr){
+notmuch_status_t
+_notmuch_choose_xapian_path (void *ctx, const char *database_path, const char **xapian_path, char **message_ptr){
     notmuch_status_t status;
     const char *trial_path, *notmuch_path;
 
@@ -474,7 +474,7 @@ notmuch_database_open_with_config (const char *database_path,
 
     _set_database_path (notmuch, database_path);
 
-    status = _choose_xapian_path (local, database_path, &notmuch->xapian_path, &message);
+    status = _notmuch_choose_xapian_path (local, database_path, &notmuch->xapian_path, &message);
     if (status)
  goto DONE;
 
diff --git a/test/T055-path-config.sh b/test/T055-path-config.sh
index fb5174ac..e4812c82 100755
--- a/test/T055-path-config.sh
+++ b/test/T055-path-config.sh
@@ -177,6 +177,13 @@ EOF
     cur_msg_filename=$(notmuch search --output=files "subject:insert-subject")
     test_expect_equal_file "$cur_msg_filename" "$gen_msg_filename"
 
+
+    test_begin_subtest "compact+search ($config)"
+    notmuch search --output=messages '*' | sort > EXPECTED
+    notmuch compact
+    notmuch search --output=messages '*' | sort > OUTPUT
+    test_expect_equal_file EXPECTED OUTPUT
+
     restore_config
 done
 
--
2.30.0
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David Bremner-2 David Bremner-2
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[PATCH 19/21] lib/open: fix hook directory calculation in split configuration

In reply to this post by David Bremner-2
Choose sibling directory of xapian database, as .notmuch may not
exist.
---
 lib/open.cc        | 6 ++++--
 test/T400-hooks.sh | 9 ++++++++-
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/lib/open.cc b/lib/open.cc
index 1e2a62cd..4324deae 100644
--- a/lib/open.cc
+++ b/lib/open.cc
@@ -1,4 +1,6 @@
 #include <unistd.h>
+#include <libgen.h>
+
 #include "database-private.h"
 #include "parse-time-vrp.h"
 
@@ -92,8 +94,8 @@ _choose_hook_dir (notmuch_database_t *notmuch,
     err = stat (hook_dir, &st);
     if (err) {
  if (errno == ENOENT) {
-    const char *database_path = notmuch_database_get_path (notmuch);
-    hook_dir = talloc_asprintf (notmuch, "%s/.notmuch/hooks", database_path);
+    char *notmuch_path = dirname (talloc_strdup (notmuch, notmuch->xapian_path));
+    hook_dir = talloc_asprintf (notmuch, "%s/hooks", notmuch_path);
  } else {
     IGNORE_RESULT (asprintf (message, "Error: Cannot stat %s: %s.\n",
      hook_dir, strerror (errno)));
diff --git a/test/T400-hooks.sh b/test/T400-hooks.sh
index a3dd4c63..8267d057 100755
--- a/test/T400-hooks.sh
+++ b/test/T400-hooks.sh
@@ -28,9 +28,10 @@ add_message
 # create maildir structure for notmuch-insert
 mkdir -p "$MAIL_DIR"/{cur,new,tmp}
 
-for config in traditional profile explicit XDG; do
+for config in traditional profile explicit XDG split; do
     unset NOTMUCH_PROFILE
     notmuch config set database.hook_dir
+    notmuch config set database.path ${MAIL_DIR}
     case $config in
  traditional)
     HOOK_DIR=${MAIL_DIR}/.notmuch/hooks
@@ -50,6 +51,12 @@ for config in traditional profile explicit XDG; do
  XDG)
     HOOK_DIR=${HOME}/.config/notmuch/default/hooks
     ;;
+ split)
+    dir="$TMP_DIRECTORY/database.$test_count"
+    notmuch config set database.path $dir
+    notmuch config set database.mail_root $MAIL_DIR
+    HOOK_DIR=${dir}/hooks
+    ;;
     esac
 
     test_begin_subtest "pre-new is run [${config}]"
--
2.30.0
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