chiark / gitweb /
tmpfiles: detect all combinations of + and !
[elogind.git] / src / tmpfiles / tmpfiles.c
index b830850879b951c80d9f4f5bec20432b533ea002..8811f274824bfc7165d728cd20f7861ad118cf6c 100644 (file)
@@ -23,7 +23,6 @@
 #include <fcntl.h>
 #include <errno.h>
 #include <string.h>
-#include <sys/stat.h>
 #include <limits.h>
 #include <dirent.h>
 #include <grp.h>
 #include <getopt.h>
 #include <stdbool.h>
 #include <time.h>
-#include <sys/types.h>
-#include <sys/param.h>
 #include <glob.h>
 #include <fnmatch.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/param.h>
 #include <sys/xattr.h>
 
 #include "log.h"
@@ -230,10 +230,7 @@ static bool unix_socket_alive(const char *fn) {
 
 static int dir_is_mount_point(DIR *d, const char *subdir) {
 
-        union file_handle_union h = {
-                .handle.handle_bytes = MAX_HANDLE_SZ
-        };
-
+        union file_handle_union h = FILE_HANDLE_INIT;
         int mount_id_parent, mount_id;
         int r_p, r;
 
@@ -483,11 +480,9 @@ static int item_set_perms(Item *i, const char *path) {
             (i->uid_set || i->gid_set))
                 if (chown(path,
                           i->uid_set ? i->uid : UID_INVALID,
-                          i->gid_set ? i->gid : GID_INVALID) < 0) {
+                          i->gid_set ? i->gid : GID_INVALID) < 0)
 
-                        log_error_errno(errno, "chown(%s) failed: %m", path);
-                        return -errno;
-                }
+                        return log_error_errno(errno, "chown(%s) failed: %m", path);
 
         return label_fix(path, false, false);
 }
@@ -498,36 +493,36 @@ static int get_xattrs_from_arg(Item *i) {
         int r;
 
         assert(i);
+        assert(i->argument);
 
-        if (!i->argument) {
-                log_error("%s: Argument can't be empty!", i->path);
-                return -EBADMSG;
-        }
         p = i->argument;
 
         while ((r = unquote_first_word(&p, &xattr, false)) > 0) {
-                _cleanup_free_ char *tmp = NULL, *name = NULL, *value = NULL;
+                _cleanup_free_ char *tmp = NULL, *name = NULL,
+                        *value = NULL, *value2 = NULL, *_xattr = xattr;
+
                 r = split_pair(xattr, "=", &name, &value);
                 if (r < 0) {
                         log_warning("Illegal xattr found: \"%s\" - ignoring.", xattr);
-                        free(xattr);
                         continue;
                 }
-                free(xattr);
-                if (streq(name, "") || streq(value, "")) {
-                        log_warning("Malformed xattr found: \"%s=%s\" - ignoring.", name, value);
+
+                if (strempty(name) || strempty(value)) {
+                        log_warning("Malformed xattr found: \"%s\" - ignoring.", xattr);
                         continue;
                 }
+
                 tmp = unquote(value, "\"");
                 if (!tmp)
                         return log_oom();
-                free(value);
-                value = cunescape(tmp);
-                if (!value)
+
+                value2 = cunescape(tmp);
+                if (!value2)
                         return log_oom();
-                if (strv_consume_pair(&i->xattrs, name, value) < 0)
+
+                if (strv_push_pair(&i->xattrs, name, value2) < 0)
                         return log_oom();
-                name = value = NULL;
+                name = value2 = NULL;
         }
 
         return r;
@@ -539,14 +534,13 @@ static int item_set_xattrs(Item *i, const char *path) {
         assert(i);
         assert(path);
 
-        if (strv_isempty(i->xattrs))
-                return 0;
-
         STRV_FOREACH_PAIR(name, value, i->xattrs) {
                 int n;
+
                 n = strlen(*value);
                 if (lsetxattr(path, *name, *value, n, 0) < 0) {
-                        log_error("Setting extended attribute %s=%s on %s failed: %m", *name, *value, path);
+                        log_error("Setting extended attribute %s=%s on %s failed: %m",
+                                  *name, *value, path);
                         return -errno;
                 }
         }
@@ -774,7 +768,7 @@ static int create_item(Item *i) {
                 } else
                         r = 0;
 
-                if (i->type == CREATE_DIRECTORY || r == -ENOTTY) {
+                if (IN_SET(i->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY) || r == -ENOTTY) {
                         RUN_WITH_UMASK(0000)
                                 r = mkdir_label(i->path, i->mode);
                 }
@@ -1123,7 +1117,7 @@ static int clean_item(Item *i) {
 }
 
 static int process_item(Item *i) {
-        int r, q, p;
+        int r, q, p, t = 0;
         _cleanup_free_ char *prefix = NULL;
 
         assert(i);
@@ -1141,21 +1135,23 @@ static int process_item(Item *i) {
                 Item *j;
 
                 j = hashmap_get(items, prefix);
-                if (j)
-                        process_item(j);
+                if (j) {
+                        int s;
+
+                        s = process_item(j);
+                        if (s < 0 && t == 0)
+                                t = s;
+                }
         }
 
         r = arg_create ? create_item(i) : 0;
         q = arg_remove ? remove_item(i) : 0;
         p = arg_clean ? clean_item(i) : 0;
 
-        if (r < 0)
-                return r;
-
-        if (q < 0)
-                return q;
-
-        return p;
+        return t < 0 ? t :
+                r < 0 ? r :
+                q < 0 ? q :
+                p;
 }
 
 static void item_free(Item *i) {
@@ -1242,9 +1238,9 @@ static int parse_line(const char *fname, unsigned line, const char *buffer) {
         _cleanup_free_ char *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL;
         _cleanup_(item_freep) Item *i = NULL;
         Item *existing;
-        char type;
         Hashmap *h;
-        int r, n = -1;
+        int r, n = -1, pos;
+        bool force = false, boot = false;
 
         assert(fname);
         assert(line >= 1);
@@ -1269,21 +1265,27 @@ static int parse_line(const char *fname, unsigned line, const char *buffer) {
                 return -EINVAL;
         }
 
-        if (strlen(action) > 1 && !in_charset(action+1, "!+")) {
-                log_error("[%s:%u] Unknown modifiers in command '%s'", fname, line, action);
-                return -EINVAL;
+        for (pos = 1; action[pos]; pos++) {
+                if (action[pos] == '!' && !boot)
+                        boot = true;
+                else if (action[pos] == '+' && !force)
+                        force = true;
+                else {
+                        log_error("[%s:%u] Unknown modifiers in command '%s'",
+                                  fname, line, action);
+                        return -EINVAL;
+                }
         }
 
-        if (strchr(action+1, '!') && !arg_boot)
+        if (boot && !arg_boot)
                 return 0;
 
-        type = action[0];
-
         i = new0(Item, 1);
         if (!i)
                 return log_oom();
 
-        i->force = !!strchr(action+1, '+');
+        i->type = action[0];
+        i->force = force;
 
         r = specifier_printf(path, specifier_table, NULL, &i->path);
         if (r < 0) {
@@ -1300,7 +1302,7 @@ static int parse_line(const char *fname, unsigned line, const char *buffer) {
                 }
         }
 
-        switch (type) {
+        switch (i->type) {
 
         case CREATE_FILE:
         case TRUNCATE_FILE:
@@ -1376,12 +1378,10 @@ static int parse_line(const char *fname, unsigned line, const char *buffer) {
                 break;
 
         default:
-                log_error("[%s:%u] Unknown command type '%c'.", fname, line, type);
+                log_error("[%s:%u] Unknown command type '%c'.", fname, line, i->type);
                 return -EBADMSG;
         }
 
-        i->type = type;
-
         if (!path_is_absolute(i->path)) {
                 log_error("[%s:%u] Path '%s' not absolute.", fname, line, i->path);
                 return -EBADMSG;
@@ -1487,7 +1487,8 @@ static int parse_line(const char *fname, unsigned line, const char *buffer) {
                 } else {
                         /* Two identical items are fine */
                         if (!item_equal(existing, i))
-                                log_warning("Two or more conflicting lines for %s configured, ignoring.", i->path);
+                                log_warning("[%s:%u] Duplicate line for path \"%s\", ignoring.",
+                                            fname, line, i->path);
                         return 0;
                 }
         } else {
@@ -1735,11 +1736,17 @@ int main(int argc, char *argv[]) {
                 }
         }
 
-        HASHMAP_FOREACH(i, globs, iterator)
-                process_item(i);
+        HASHMAP_FOREACH(i, globs, iterator) {
+                k = process_item(i);
+                if (k < 0 && r == 0)
+                        r = k;
+        }
 
-        HASHMAP_FOREACH(i, items, iterator)
-                process_item(i);
+        HASHMAP_FOREACH(i, items, iterator) {
+                k = process_item(i);
+                if (k < 0 && r == 0)
+                        r = k;
+        }
 
 finish:
         while ((i = hashmap_steal_first(items)))