X-Git-Url: https://git.notmuchmail.org/git?p=notmuch;a=blobdiff_plain;f=notmuch-insert.c;h=a1d564c78cd1eb0f52b126de7c7c4dd257c87888;hp=ccb091ac0561f1af3ceb1f2daefd0e26f7990e88;hb=dcfcb4ba7b9dfdb49ec62d8fb47a72fb60540655;hpb=c878081127f48c393835b6f067f8f85beda9ff29

diff --git a/notmuch-insert.c b/notmuch-insert.c
index ccb091ac..a1d564c7 100644
--- a/notmuch-insert.c
+++ b/notmuch-insert.c
@@ -67,20 +67,21 @@ safe_gethostname (char *hostname, size_t len)
 static notmuch_bool_t
 sync_dir (const char *dir)
 {
-    notmuch_bool_t ret;
-    int fd;
+    int fd, r;
 
     fd = open (dir, O_RDONLY);
     if (fd == -1) {
-	fprintf (stderr, "Error: open() dir failed: %s\n", strerror (errno));
+	fprintf (stderr, "Error: open %s: %s\n", dir, strerror (errno));
 	return FALSE;
     }
-    ret = (fsync (fd) == 0);
-    if (! ret) {
-	fprintf (stderr, "Error: fsync() dir failed: %s\n", strerror (errno));
-    }
+
+    r = fsync (fd);
+    if (r)
+	fprintf (stderr, "Error: fsync %s: %s\n", dir, strerror (errno));
+
     close (fd);
-    return ret;
+
+    return r == 0;
 }
 
 /*
@@ -103,97 +104,104 @@ is_valid_folder_name (const char *folder)
     }
 }
 
-/* Make the given directory, succeeding if it already exists. */
+/*
+ * Make the given directory and its parents as necessary, using the
+ * given mode. Return TRUE on success, FALSE otherwise. Partial
+ * results are not cleaned up on errors.
+ */
 static notmuch_bool_t
-make_directory (char *path, int mode)
+mkdir_recursive (const void *ctx, const char *path, int mode)
 {
-    notmuch_bool_t ret;
-    char *slash;
+    struct stat st;
+    int r;
+    char *parent = NULL, *slash;
 
-    if (mkdir (path, mode) != 0)
-	return (errno == EEXIST);
+    /* First check the common case: directory already exists. */
+    r = stat (path, &st);
+    if (r == 0) {
+        if (! S_ISDIR (st.st_mode)) {
+	    fprintf (stderr, "Error: '%s' is not a directory: %s\n",
+		     path, strerror (EEXIST));
+	    return FALSE;
+	}
 
-    /* Sync the parent directory for durability. */
-    ret = TRUE;
-    slash = strrchr (path, '/');
-    if (slash) {
-	*slash = '\0';
-	ret = sync_dir (path);
-	*slash = '/';
+	return TRUE;
+    } else if (errno != ENOENT) {
+	fprintf (stderr, "Error: stat '%s': %s\n", path, strerror (errno));
+	return FALSE;
     }
-    return ret;
-}
-
-/* Make the given directory including its parent directories as necessary.
- * Return TRUE on success, FALSE on error. */
-static notmuch_bool_t
-make_directory_and_parents (char *path, int mode)
-{
-    struct stat st;
-    char *start;
-    char *end;
-    notmuch_bool_t ret;
 
-    /* First check the common case: directory already exists. */
-    if (stat (path, &st) == 0)
-	return S_ISDIR (st.st_mode) ? TRUE : FALSE;
-
-    for (start = path; *start != '\0'; start = end + 1) {
-	/* start points to the first unprocessed character.
-	 * Find the next slash from start onwards. */
-	end = strchr (start, '/');
-
-	/* If there are no more slashes then all the parent directories
-	 * have been made.  Now attempt to make the whole path. */
-	if (end == NULL)
-	    return make_directory (path, mode);
-
-	/* Make the path up to the next slash, unless the current
-	 * directory component is actually empty. */
-	if (end > start) {
-	    *end = '\0';
-	    ret = make_directory (path, mode);
-	    *end = '/';
-	    if (! ret)
-		return FALSE;
+    /* mkdir parents, if any */
+    slash = strrchr (path, '/');
+    if (slash && slash != path) {
+	parent = talloc_strndup (ctx, path, slash - path);
+	if (! parent) {
+	    fprintf (stderr, "Error: %s\n", strerror (ENOMEM));
+	    return FALSE;
 	}
+
+	if (! mkdir_recursive (ctx, parent, mode))
+	    return FALSE;
     }
 
-    return TRUE;
+    if (mkdir (path, mode)) {
+	fprintf (stderr, "Error: mkdir '%s': %s\n", path, strerror (errno));
+	return FALSE;
+    }
+
+    return parent ? sync_dir (parent) : TRUE;
 }
 
-/* Create the given maildir folder, i.e. dir and its subdirectories
- * 'cur', 'new', 'tmp'. */
+/*
+ * Create the given maildir folder, i.e. maildir and its
+ * subdirectories cur/new/tmp. Return TRUE on success, FALSE
+ * otherwise. Partial results are not cleaned up on errors.
+ */
 static notmuch_bool_t
-maildir_create_folder (void *ctx, const char *dir)
+maildir_create_folder (const void *ctx, const char *maildir)
 {
+    const char *subdirs[] = { "cur", "new", "tmp" };
     const int mode = 0700;
     char *subdir;
-    char *tail;
+    unsigned int i;
 
-    /* Create 'cur' directory, including parent directories. */
-    subdir = talloc_asprintf (ctx, "%s/cur", dir);
-    if (! subdir) {
-	fprintf (stderr, "Out of memory.\n");
-	return FALSE;
+    for (i = 0; i < ARRAY_SIZE (subdirs); i++) {
+	subdir = talloc_asprintf (ctx, "%s/%s", maildir, subdirs[i]);
+	if (! subdir) {
+	    fprintf (stderr, "Error: %s\n", strerror (ENOMEM));
+	    return FALSE;
+	}
+
+	if (! mkdir_recursive (ctx, subdir, mode))
+	    return FALSE;
     }
-    if (! make_directory_and_parents (subdir, mode))
-	return FALSE;
 
-    tail = subdir + strlen (subdir) - 3;
+    return TRUE;
+}
 
-    /* Create 'new' directory. */
-    strcpy (tail, "new");
-    if (! make_directory (subdir, mode))
-	return FALSE;
+/*
+ * Generate a temporary file basename, no path, do not create an
+ * actual file. Return the basename, or NULL on errors.
+ */
+static char *
+tempfilename (const void *ctx)
+{
+    char *filename;
+    char hostname[256];
+    struct timeval tv;
+    pid_t pid;
 
-    /* Create 'tmp' directory. */
-    strcpy (tail, "tmp");
-    if (! make_directory (subdir, mode))
-	return FALSE;
+    /* We follow the Dovecot file name generation algorithm. */
+    pid = getpid ();
+    safe_gethostname (hostname, sizeof (hostname));
+    gettimeofday (&tv, NULL);
 
-    talloc_free (subdir);
-    return TRUE;
+    filename = talloc_asprintf (ctx, "%ld.M%ldP%d.%s",
+				tv.tv_sec, tv.tv_usec, pid, hostname);
+    if (! filename)
+	fprintf (stderr, "Error: %s\n", strerror (ENOMEM));
+
+    return filename;
 }
 
 /* Open a unique file in the 'tmp' sub-directory of dir.
@@ -205,23 +213,13 @@ static int
 maildir_open_tmp_file (void *ctx, const char *dir,
 		       char **tmppath, char **newpath, char **newdir)
 {
-    pid_t pid;
-    char hostname[256];
-    struct timeval tv;
     char *filename;
     int fd = -1;
 
-    /* We follow the Dovecot file name generation algorithm. */
-    pid = getpid ();
-    safe_gethostname (hostname, sizeof (hostname));
     do {
-	gettimeofday (&tv, NULL);
-	filename = talloc_asprintf (ctx, "%ld.M%ldP%d.%s",
-				    tv.tv_sec, tv.tv_usec, pid, hostname);
-	if (! filename) {
-	    fprintf (stderr, "Out of memory\n");
+	filename = tempfilename (ctx);
+	if (! filename)
 	    return -1;
-	}
 
 	*tmppath = talloc_asprintf (ctx, "%s/tmp/%s", dir, filename);
 	if (! *tmppath) {
@@ -251,11 +249,12 @@ maildir_open_tmp_file (void *ctx, const char *dir,
     return fd;
 }
 
-/* Copy the contents of standard input (fdin) into fdout.
- * Returns TRUE if a non-empty file was written successfully.
- * Otherwise, return FALSE. */
+/*
+ * Copy fdin to fdout, return TRUE on success, and FALSE on errors and
+ * empty input.
+ */
 static notmuch_bool_t
-copy_stdin (int fdin, int fdout)
+copy_fd (int fdout, int fdin)
 {
     notmuch_bool_t empty = TRUE;
 
@@ -308,7 +307,7 @@ write_message (void *ctx, int fdin, const char *dir, char **newpath)
 
     cleanup_path = tmppath;
 
-    if (! copy_stdin (fdin, fdout))
+    if (! copy_fd (fdout, fdin))
 	goto FAIL;
 
     if (fsync (fdout) != 0) {
@@ -461,11 +460,8 @@ notmuch_insert_command (notmuch_config_t *config, int argc, char *argv[])
 	    fprintf (stderr, "Out of memory\n");
 	    return EXIT_FAILURE;
 	}
-	if (create_folder && ! maildir_create_folder (config, maildir)) {
-	    fprintf (stderr, "Error: creating maildir %s: %s\n",
-		     maildir, strerror (errno));
+	if (create_folder && ! maildir_create_folder (config, maildir))
 	    return EXIT_FAILURE;
-	}
     }
 
     /* Setup our handler for SIGINT. We do not set SA_RESTART so that copying