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Diffstat (limited to 'src/tmpfiles/tmpfiles.c')
-rw-r--r--src/tmpfiles/tmpfiles.c160
1 files changed, 115 insertions, 45 deletions
diff --git a/src/tmpfiles/tmpfiles.c b/src/tmpfiles/tmpfiles.c
index f4885ec942..8122d6af6a 100644
--- a/src/tmpfiles/tmpfiles.c
+++ b/src/tmpfiles/tmpfiles.c
@@ -51,6 +51,7 @@
#include "set.h"
#include "conf-files.h"
#include "capability.h"
+#include "specifier.h"
/* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates
* them in the file system. This is intended to be used to create
@@ -68,6 +69,7 @@ typedef enum ItemType {
CREATE_SYMLINK = 'L',
CREATE_CHAR_DEVICE = 'c',
CREATE_BLOCK_DEVICE = 'b',
+ ADJUST_MODE = 'm',
/* These ones take globs */
IGNORE_PATH = 'x',
@@ -105,7 +107,8 @@ static bool arg_create = false;
static bool arg_clean = false;
static bool arg_remove = false;
-static const char *arg_prefix = NULL;
+static char **include_prefixes = NULL;
+static char **exclude_prefixes = NULL;
static const char conf_file_dirs[] =
"/etc/tmpfiles.d\0"
@@ -255,8 +258,8 @@ static int dir_cleanup(
dev_t rootdev,
bool mountpoint,
int maxdepth,
- bool keep_this_level)
-{
+ bool keep_this_level) {
+
struct dirent *dent;
struct timespec times[2];
bool deleted = false;
@@ -427,12 +430,16 @@ finish:
return r;
}
-static int item_set_perms(Item *i, const char *path) {
+static int item_set_perms_full(Item *i, const char *path, bool ignore_enoent) {
+ int r;
+
/* not using i->path directly because it may be a glob */
if (i->mode_set)
if (chmod(path, i->mode) < 0) {
- log_error("chmod(%s) failed: %m", path);
- return -errno;
+ if (errno != ENOENT || !ignore_enoent) {
+ log_error("chmod(%s) failed: %m", path);
+ return -errno;
+ }
}
if (i->uid_set || i->gid_set)
@@ -440,11 +447,18 @@ static int item_set_perms(Item *i, const char *path) {
i->uid_set ? i->uid : (uid_t) -1,
i->gid_set ? i->gid : (gid_t) -1) < 0) {
- log_error("chown(%s) failed: %m", path);
- return -errno;
+ if (errno != ENOENT || !ignore_enoent) {
+ log_error("chown(%s) failed: %m", path);
+ return -errno;
+ }
}
- return label_fix(path, false, false);
+ r = label_fix(path, false, false);
+ return r == -ENOENT && ignore_enoent ? 0 : r;
+}
+
+static int item_set_perms(Item *i, const char *path) {
+ return item_set_perms_full(i, path, false);
}
static int write_one_file(Item *i, const char *path) {
@@ -640,6 +654,7 @@ static int create_item(Item *i) {
if (r < 0)
return r;
break;
+
case WRITE_FILE:
r = glob_item(i, write_one_file);
if (r < 0)
@@ -647,6 +662,13 @@ static int create_item(Item *i) {
break;
+ case ADJUST_MODE:
+ r = item_set_perms_full(i, i->path, true);
+ if (r < 0)
+ return r;
+
+ break;
+
case TRUNCATE_DIRECTORY:
case CREATE_DIRECTORY:
@@ -783,7 +805,7 @@ static int create_item(Item *i) {
r = glob_item(i, item_set_perms);
if (r < 0)
- return 0;
+ return r;
break;
case RECURSIVE_RELABEL_PATH:
@@ -817,6 +839,7 @@ static int remove_item_instance(Item *i, const char *instance) {
case RELABEL_PATH:
case RECURSIVE_RELABEL_PATH:
case WRITE_FILE:
+ case ADJUST_MODE:
break;
case REMOVE_PATH:
@@ -862,6 +885,7 @@ static int remove_item(Item *i) {
case RELABEL_PATH:
case RECURSIVE_RELABEL_PATH:
case WRITE_FILE:
+ case ADJUST_MODE:
break;
case REMOVE_PATH:
@@ -971,6 +995,12 @@ static void item_free(Item *i) {
free(i);
}
+static inline void item_freep(Item **i) {
+ if (*i)
+ item_free(*i);
+}
+#define _cleanup_item_free_ _cleanup_(item_freep)
+
static bool item_equal(Item *a, Item *b) {
assert(a);
assert(b);
@@ -1012,11 +1042,38 @@ static bool item_equal(Item *a, Item *b) {
return true;
}
+static bool should_include_path(const char *path) {
+ char **prefix;
+
+ STRV_FOREACH(prefix, exclude_prefixes) {
+ if (path_startswith(path, *prefix))
+ return false;
+ }
+
+ STRV_FOREACH(prefix, include_prefixes) {
+ if (path_startswith(path, *prefix))
+ return true;
+ }
+
+ /* no matches, so we should include this path only if we
+ * have no whitelist at all */
+ return strv_length(include_prefixes) == 0;
+}
+
static int parse_line(const char *fname, unsigned line, const char *buffer) {
- _cleanup_free_ Item *i = NULL;
+
+ static const Specifier specifier_table[] = {
+ { 'm', specifier_machine_id, NULL },
+ { 'b', specifier_boot_id, NULL },
+ { 'H', specifier_host_name, NULL },
+ { 'v', specifier_kernel_release, NULL },
+ {}
+ };
+
+ _cleanup_item_free_ Item *i = NULL;
Item *existing;
_cleanup_free_ char
- *mode = NULL, *user = NULL, *group = NULL, *age = NULL;
+ *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL;
char type;
Hashmap *h;
int r, n = -1;
@@ -1025,14 +1082,10 @@ static int parse_line(const char *fname, unsigned line, const char *buffer) {
assert(line >= 1);
assert(buffer);
- i = new0(Item, 1);
- if (!i)
- return log_oom();
-
r = sscanf(buffer,
"%c %ms %ms %ms %ms %ms %n",
&type,
- &i->path,
+ &path,
&mode,
&user,
&group,
@@ -1043,6 +1096,16 @@ static int parse_line(const char *fname, unsigned line, const char *buffer) {
return -EIO;
}
+ i = new0(Item, 1);
+ if (!i)
+ return log_oom();
+
+ r = specifier_printf(path, specifier_table, NULL, &i->path);
+ if (r < 0) {
+ log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, path);
+ return r;
+ }
+
if (n >= 0) {
n += strspn(buffer+n, WHITESPACE);
if (buffer[n] != 0 && (buffer[n] != '-' || buffer[n+1] != 0)) {
@@ -1065,6 +1128,7 @@ static int parse_line(const char *fname, unsigned line, const char *buffer) {
case RECURSIVE_REMOVE_PATH:
case RELABEL_PATH:
case RECURSIVE_RELABEL_PATH:
+ case ADJUST_MODE:
break;
case CREATE_SYMLINK:
@@ -1113,7 +1177,7 @@ static int parse_line(const char *fname, unsigned line, const char *buffer) {
path_kill_slashes(i->path);
- if (arg_prefix && !path_startswith(i->path, arg_prefix))
+ if (!should_include_path(i->path))
return 0;
if (user && !streq(user, "-")) {
@@ -1198,11 +1262,12 @@ static int help(void) {
printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
"Creates, deletes and cleans up volatile and temporary files and directories.\n\n"
- " -h --help Show this help\n"
- " --create Create marked files/directories\n"
- " --clean Clean up marked directories\n"
- " --remove Remove marked files/directories\n"
- " --prefix=PATH Only apply rules that apply to paths with the specified prefix\n",
+ " -h --help Show this help\n"
+ " --create Create marked files/directories\n"
+ " --clean Clean up marked directories\n"
+ " --remove Remove marked files/directories\n"
+ " --prefix=PATH Only apply rules that apply to paths with the specified prefix\n"
+ " --exclude-prefix=PATH Ignore rules that apply to paths with the specified prefix\n",
program_invocation_short_name);
return 0;
@@ -1214,16 +1279,18 @@ static int parse_argv(int argc, char *argv[]) {
ARG_CREATE,
ARG_CLEAN,
ARG_REMOVE,
- ARG_PREFIX
+ ARG_PREFIX,
+ ARG_EXCLUDE_PREFIX,
};
static const struct option options[] = {
- { "help", no_argument, NULL, 'h' },
- { "create", no_argument, NULL, ARG_CREATE },
- { "clean", no_argument, NULL, ARG_CLEAN },
- { "remove", no_argument, NULL, ARG_REMOVE },
- { "prefix", required_argument, NULL, ARG_PREFIX },
- { NULL, 0, NULL, 0 }
+ { "help", no_argument, NULL, 'h' },
+ { "create", no_argument, NULL, ARG_CREATE },
+ { "clean", no_argument, NULL, ARG_CLEAN },
+ { "remove", no_argument, NULL, ARG_REMOVE },
+ { "prefix", required_argument, NULL, ARG_PREFIX },
+ { "exclude-prefix", required_argument, NULL, ARG_EXCLUDE_PREFIX },
+ { NULL, 0, NULL, 0 }
};
int c;
@@ -1252,7 +1319,13 @@ static int parse_argv(int argc, char *argv[]) {
break;
case ARG_PREFIX:
- arg_prefix = optarg;
+ if (strv_extend(&include_prefixes, optarg) < 0)
+ return log_oom();
+ break;
+
+ case ARG_EXCLUDE_PREFIX:
+ if (strv_extend(&exclude_prefixes, optarg) < 0)
+ return log_oom();
break;
case '?':
@@ -1273,11 +1346,12 @@ static int parse_argv(int argc, char *argv[]) {
}
static int read_config_file(const char *fn, bool ignore_enoent) {
- FILE *f;
- unsigned v = 0;
- int r;
+ _cleanup_fclose_ FILE *f = NULL;
+ char line[LINE_MAX];
Iterator iterator;
+ unsigned v = 0;
Item *i;
+ int r;
assert(fn);
@@ -1290,23 +1364,19 @@ static int read_config_file(const char *fn, bool ignore_enoent) {
return r;
}
- log_debug("apply: %s\n", fn);
- for (;;) {
- char line[LINE_MAX], *l;
+ FOREACH_LINE(line, f, break) {
+ char *l;
int k;
- if (!(fgets(line, sizeof(line), f)))
- break;
-
v++;
l = strstrip(line);
if (*l == '#' || *l == 0)
continue;
- if ((k = parse_line(fn, v, l)) < 0)
- if (r == 0)
- r = k;
+ k = parse_line(fn, v, l);
+ if (k < 0 && r == 0)
+ r = k;
}
/* we have to determine age parameter for each entry of type X */
@@ -1343,8 +1413,6 @@ static int read_config_file(const char *fn, bool ignore_enoent) {
r = -EIO;
}
- fclose(f);
-
return r;
}
@@ -1417,6 +1485,8 @@ finish:
hashmap_free(items);
hashmap_free(globs);
+ strv_free(include_prefixes);
+
set_free_free(unix_sockets);
label_finish();
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