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-rw-r--r--src/journal/sd-journal.c350
1 files changed, 182 insertions, 168 deletions
diff --git a/src/journal/sd-journal.c b/src/journal/sd-journal.c
index 13fa9b52fc..5cde7f17f7 100644
--- a/src/journal/sd-journal.c
+++ b/src/journal/sd-journal.c
@@ -21,29 +21,38 @@
#include <errno.h>
#include <fcntl.h>
+#include <linux/magic.h>
+#include <poll.h>
#include <stddef.h>
-#include <unistd.h>
#include <sys/inotify.h>
-#include <poll.h>
#include <sys/vfs.h>
-#include <linux/magic.h>
+#include <unistd.h>
#include "sd-journal.h"
+
+#include "alloc-util.h"
+#include "catalog.h"
+#include "compress.h"
+#include "dirent-util.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "formats-util.h"
+#include "fs-util.h"
+#include "hashmap.h"
+#include "hostname-util.h"
+#include "io-util.h"
#include "journal-def.h"
#include "journal-file.h"
-#include "hashmap.h"
+#include "journal-internal.h"
#include "list.h"
-#include "strv.h"
-#include "path-util.h"
#include "lookup3.h"
-#include "compress.h"
-#include "journal-internal.h"
#include "missing.h"
-#include "catalog.h"
+#include "path-util.h"
#include "replace-var.h"
-#include "fileio.h"
-#include "formats-util.h"
-#include "hostname-util.h"
+#include "stat-util.h"
+#include "stdio-util.h"
+#include "string-util.h"
+#include "strv.h"
#define JOURNAL_FILES_MAX 7168
@@ -64,19 +73,46 @@ static bool journal_pid_changed(sd_journal *j) {
return j->original_pid != getpid();
}
-/* We return an error here only if we didn't manage to
- memorize the real error. */
-static int set_put_error(sd_journal *j, int r) {
+static int journal_put_error(sd_journal *j, int r, const char *path) {
+ char *copy;
int k;
+ /* Memorize an error we encountered, and store which
+ * file/directory it was generated from. Note that we store
+ * only *one* path per error code, as the error code is the
+ * key into the hashmap, and the path is the value. This means
+ * we keep track only of all error kinds, but not of all error
+ * locations. This has the benefit that the hashmap cannot
+ * grow beyond bounds.
+ *
+ * We return an error here only if we didn't manage to
+ * memorize the real error. */
+
if (r >= 0)
return r;
- k = set_ensure_allocated(&j->errors, NULL);
+ k = hashmap_ensure_allocated(&j->errors, NULL);
if (k < 0)
return k;
- return set_put(j->errors, INT_TO_PTR(r));
+ if (path) {
+ copy = strdup(path);
+ if (!copy)
+ return -ENOMEM;
+ } else
+ copy = NULL;
+
+ k = hashmap_put(j->errors, INT_TO_PTR(r), copy);
+ if (k < 0) {
+ free(copy);
+
+ if (k == -EEXIST)
+ return 0;
+
+ return k;
+ }
+
+ return 0;
}
static void detach_location(sd_journal *j) {
@@ -1016,8 +1052,6 @@ _public_ int sd_journal_seek_cursor(sd_journal *j, const char *cursor) {
_public_ int sd_journal_test_cursor(sd_journal *j, const char *cursor) {
int r;
- const char *word, *state;
- size_t l;
Object *o;
assert_return(j, -EINVAL);
@@ -1031,20 +1065,23 @@ _public_ int sd_journal_test_cursor(sd_journal *j, const char *cursor) {
if (r < 0)
return r;
- FOREACH_WORD_SEPARATOR(word, l, cursor, ";", state) {
+ for(;;) {
_cleanup_free_ char *item = NULL;
- sd_id128_t id;
unsigned long long ll;
+ sd_id128_t id;
int k = 0;
- if (l < 2 || word[1] != '=')
- return -EINVAL;
+ r = extract_first_word(&cursor, &item, ";", EXTRACT_DONT_COALESCE_SEPARATORS);
+ if (r < 0)
+ return r;
- item = strndup(word, l);
- if (!item)
- return -ENOMEM;
+ if (r == 0)
+ break;
- switch (word[0]) {
+ if (strlen(item) < 2 || item[1] != '=')
+ return -EINVAL;
+
+ switch (item[0]) {
case 's':
k = sd_id128_from_string(item+2, &id);
@@ -1173,6 +1210,8 @@ static bool file_has_type_prefix(const char *prefix, const char *filename) {
}
static bool file_type_wanted(int flags, const char *filename) {
+ assert(filename);
+
if (!endswith(filename, ".journal") && !endswith(filename, ".journal~"))
return false;
@@ -1197,7 +1236,7 @@ static bool file_type_wanted(int flags, const char *filename) {
static int add_any_file(sd_journal *j, const char *path) {
JournalFile *f = NULL;
- int r;
+ int r, k;
assert(j);
assert(path);
@@ -1206,20 +1245,23 @@ static int add_any_file(sd_journal *j, const char *path) {
return 0;
if (ordered_hashmap_size(j->files) >= JOURNAL_FILES_MAX) {
- log_warning("Too many open journal files, not adding %s.", path);
- return set_put_error(j, -ETOOMANYREFS);
+ log_debug("Too many open journal files, not adding %s.", path);
+ r = -ETOOMANYREFS;
+ goto fail;
}
r = journal_file_open(path, O_RDONLY, 0, false, false, NULL, j->mmap, NULL, &f);
- if (r < 0)
- return r;
+ if (r < 0) {
+ log_debug_errno(r, "Failed to open journal file %s: %m", path);
+ goto fail;
+ }
/* journal_file_dump(f); */
r = ordered_hashmap_put(j->files, f->path, f);
if (r < 0) {
journal_file_close(f);
- return r;
+ goto fail;
}
log_debug("File %s added.", f->path);
@@ -1229,11 +1271,17 @@ static int add_any_file(sd_journal *j, const char *path) {
j->current_invalidate_counter ++;
return 0;
+
+fail:
+ k = journal_put_error(j, r, path);
+ if (k < 0)
+ return k;
+
+ return r;
}
static int add_file(sd_journal *j, const char *prefix, const char *filename) {
- _cleanup_free_ char *path = NULL;
- int r;
+ const char *path;
assert(j);
assert(prefix);
@@ -1243,34 +1291,24 @@ static int add_file(sd_journal *j, const char *prefix, const char *filename) {
!file_type_wanted(j->flags, filename))
return 0;
- path = strjoin(prefix, "/", filename, NULL);
- if (!path)
- return -ENOMEM;
-
- r = add_any_file(j, path);
- if (r == -ENOENT)
- return 0;
- return r;
+ path = strjoina(prefix, "/", filename);
+ return add_any_file(j, path);
}
-static int remove_file(sd_journal *j, const char *prefix, const char *filename) {
- _cleanup_free_ char *path;
+static void remove_file(sd_journal *j, const char *prefix, const char *filename) {
+ const char *path;
JournalFile *f;
assert(j);
assert(prefix);
assert(filename);
- path = strjoin(prefix, "/", filename, NULL);
- if (!path)
- return -ENOMEM;
-
+ path = strjoina(prefix, "/", filename);
f = ordered_hashmap_get(j->files, path);
if (!f)
- return 0;
+ return;
remove_file_real(j, f);
- return 0;
}
static void remove_file_real(sd_journal *j, JournalFile *f) {
@@ -1299,12 +1337,27 @@ static void remove_file_real(sd_journal *j, JournalFile *f) {
j->current_invalidate_counter ++;
}
+static int dirname_is_machine_id(const char *fn) {
+ sd_id128_t id, machine;
+ int r;
+
+ r = sd_id128_get_machine(&machine);
+ if (r < 0)
+ return r;
+
+ r = sd_id128_from_string(fn, &id);
+ if (r < 0)
+ return r;
+
+ return sd_id128_equal(id, machine);
+}
+
static int add_directory(sd_journal *j, const char *prefix, const char *dirname) {
_cleanup_free_ char *path = NULL;
- int r;
_cleanup_closedir_ DIR *d = NULL;
- sd_id128_t id, mid;
+ struct dirent *de = NULL;
Directory *m;
+ int r, k;
assert(j);
assert(prefix);
@@ -1313,35 +1366,36 @@ static int add_directory(sd_journal *j, const char *prefix, const char *dirname)
log_debug("Considering %s/%s.", prefix, dirname);
if ((j->flags & SD_JOURNAL_LOCAL_ONLY) &&
- (sd_id128_from_string(dirname, &id) < 0 ||
- sd_id128_get_machine(&mid) < 0 ||
- !(sd_id128_equal(id, mid) || path_startswith(prefix, "/run"))))
+ !(dirname_is_machine_id(dirname) > 0 || path_startswith(prefix, "/run")))
return 0;
path = strjoin(prefix, "/", dirname, NULL);
- if (!path)
- return -ENOMEM;
+ if (!path) {
+ r = -ENOMEM;
+ goto fail;
+ }
d = opendir(path);
if (!d) {
- log_debug_errno(errno, "Failed to open %s: %m", path);
- if (errno == ENOENT)
- return 0;
- return -errno;
+ r = log_debug_errno(errno, "Failed to open directory %s: %m", path);
+ goto fail;
}
m = hashmap_get(j->directories_by_path, path);
if (!m) {
m = new0(Directory, 1);
- if (!m)
- return -ENOMEM;
+ if (!m) {
+ r = -ENOMEM;
+ goto fail;
+ }
m->is_root = false;
m->path = path;
if (hashmap_put(j->directories_by_path, m->path, m) < 0) {
free(m);
- return -ENOMEM;
+ r = -ENOMEM;
+ goto fail;
}
path = NULL; /* avoid freeing in cleanup */
@@ -1363,41 +1417,30 @@ static int add_directory(sd_journal *j, const char *prefix, const char *dirname)
inotify_rm_watch(j->inotify_fd, m->wd);
}
- for (;;) {
- struct dirent *de;
-
- errno = 0;
- de = readdir(d);
- if (!de && errno != 0) {
- r = -errno;
- log_debug_errno(errno, "Failed to read directory %s: %m", m->path);
- return r;
- }
- if (!de)
- break;
+ FOREACH_DIRENT_ALL(de, d, return log_debug_errno(errno, "Failed to read directory %s: %m", m->path)) {
if (dirent_is_file_with_suffix(de, ".journal") ||
- dirent_is_file_with_suffix(de, ".journal~")) {
- r = add_file(j, m->path, de->d_name);
- if (r < 0) {
- log_debug_errno(r, "Failed to add file %s/%s: %m",
- m->path, de->d_name);
- r = set_put_error(j, r);
- if (r < 0)
- return r;
- }
- }
+ dirent_is_file_with_suffix(de, ".journal~"))
+ (void) add_file(j, m->path, de->d_name);
}
check_network(j, dirfd(d));
return 0;
+
+fail:
+ k = journal_put_error(j, r, path ?: dirname);
+ if (k < 0)
+ return k;
+
+ return r;
}
-static int add_root_directory(sd_journal *j, const char *p) {
+static int add_root_directory(sd_journal *j, const char *p, bool missing_ok) {
_cleanup_closedir_ DIR *d = NULL;
+ struct dirent *de;
Directory *m;
- int r;
+ int r, k;
assert(j);
assert(p);
@@ -1410,26 +1453,35 @@ static int add_root_directory(sd_journal *j, const char *p) {
p = strjoina(j->prefix, p);
d = opendir(p);
- if (!d)
- return -errno;
+ if (!d) {
+ if (errno == ENOENT && missing_ok)
+ return 0;
+
+ r = log_debug_errno(errno, "Failed to open root directory %s: %m", p);
+ goto fail;
+ }
m = hashmap_get(j->directories_by_path, p);
if (!m) {
m = new0(Directory, 1);
- if (!m)
- return -ENOMEM;
+ if (!m) {
+ r = -ENOMEM;
+ goto fail;
+ }
m->is_root = true;
m->path = strdup(p);
if (!m->path) {
free(m);
- return -ENOMEM;
+ r = -ENOMEM;
+ goto fail;
}
if (hashmap_put(j->directories_by_path, m->path, m) < 0) {
free(m->path);
free(m);
- return -ENOMEM;
+ r = -ENOMEM;
+ goto fail;
}
j->current_invalidate_counter ++;
@@ -1452,42 +1504,27 @@ static int add_root_directory(sd_journal *j, const char *p) {
if (j->no_new_files)
return 0;
- for (;;) {
- struct dirent *de;
+ FOREACH_DIRENT_ALL(de, d, return log_debug_errno(errno, "Failed to read directory %s: %m", m->path)) {
sd_id128_t id;
- errno = 0;
- de = readdir(d);
- if (!de && errno != 0) {
- r = -errno;
- log_debug_errno(errno, "Failed to read directory %s: %m", m->path);
- return r;
- }
- if (!de)
- break;
-
if (dirent_is_file_with_suffix(de, ".journal") ||
- dirent_is_file_with_suffix(de, ".journal~")) {
- r = add_file(j, m->path, de->d_name);
- if (r < 0) {
- log_debug_errno(r, "Failed to add file %s/%s: %m",
- m->path, de->d_name);
- r = set_put_error(j, r);
- if (r < 0)
- return r;
- }
- } else if ((de->d_type == DT_DIR || de->d_type == DT_LNK || de->d_type == DT_UNKNOWN) &&
- sd_id128_from_string(de->d_name, &id) >= 0) {
-
- r = add_directory(j, m->path, de->d_name);
- if (r < 0)
- log_debug_errno(r, "Failed to add directory %s/%s: %m", m->path, de->d_name);
- }
+ dirent_is_file_with_suffix(de, ".journal~"))
+ (void) add_file(j, m->path, de->d_name);
+ else if (IN_SET(de->d_type, DT_DIR, DT_LNK, DT_UNKNOWN) &&
+ sd_id128_from_string(de->d_name, &id) >= 0)
+ (void) add_directory(j, m->path, de->d_name);
}
check_network(j, dirfd(d));
return 0;
+
+fail:
+ k = journal_put_error(j, r, p);
+ if (k < 0)
+ return k;
+
+ return r;
}
static void remove_directory(sd_journal *j, Directory *d) {
@@ -1512,8 +1549,8 @@ static void remove_directory(sd_journal *j, Directory *d) {
}
static int add_search_paths(sd_journal *j) {
- int r;
- const char search_paths[] =
+
+ static const char search_paths[] =
"/run/log/journal\0"
"/var/log/journal\0";
const char *p;
@@ -1523,14 +1560,8 @@ static int add_search_paths(sd_journal *j) {
/* We ignore most errors here, since the idea is to only open
* what's actually accessible, and ignore the rest. */
- NULSTR_FOREACH(p, search_paths) {
- r = add_root_directory(j, p);
- if (r < 0 && r != -ENOENT) {
- r = set_put_error(j, r);
- if (r < 0)
- return r;
- }
- }
+ NULSTR_FOREACH(p, search_paths)
+ (void) add_root_directory(j, p, true);
return 0;
}
@@ -1554,17 +1585,14 @@ static int add_current_paths(sd_journal *j) {
if (!dir)
return -ENOMEM;
- r = add_root_directory(j, dir);
- if (r < 0) {
- set_put_error(j, r);
+ r = add_root_directory(j, dir, true);
+ if (r < 0)
return r;
- }
}
return 0;
}
-
static int allocate_inotify(sd_journal *j) {
assert(j);
@@ -1692,11 +1720,9 @@ _public_ int sd_journal_open_directory(sd_journal **ret, const char *path, int f
if (!j)
return -ENOMEM;
- r = add_root_directory(j, path);
- if (r < 0) {
- set_put_error(j, r);
+ r = add_root_directory(j, path, false);
+ if (r < 0)
goto fail;
- }
*ret = j;
return 0;
@@ -1721,10 +1747,8 @@ _public_ int sd_journal_open_files(sd_journal **ret, const char **paths, int fla
STRV_FOREACH(path, paths) {
r = add_any_file(j, *path);
- if (r < 0) {
- log_error_errno(r, "Failed to open %s: %m", *path);
+ if (r < 0)
goto fail;
- }
}
j->no_new_files = true;
@@ -1741,6 +1765,7 @@ fail:
_public_ void sd_journal_close(sd_journal *j) {
Directory *d;
JournalFile *f;
+ char *p;
if (!j)
return;
@@ -1768,10 +1793,13 @@ _public_ void sd_journal_close(sd_journal *j) {
mmap_cache_unref(j->mmap);
}
+ while ((p = hashmap_steal_first(j->errors)))
+ free(p);
+ hashmap_free(j->errors);
+
free(j->path);
free(j->prefix);
free(j->unique_field);
- set_free(j->errors);
free(j);
}
@@ -2064,7 +2092,7 @@ _public_ int sd_journal_get_fd(sd_journal *j) {
if (j->no_new_files)
r = add_current_paths(j);
else if (j->path)
- r = add_root_directory(j, j->path);
+ r = add_root_directory(j, j->path, true);
else
r = add_search_paths(j);
if (r < 0)
@@ -2111,7 +2139,6 @@ _public_ int sd_journal_get_timeout(sd_journal *j, uint64_t *timeout_usec) {
static void process_inotify_event(sd_journal *j, struct inotify_event *e) {
Directory *d;
- int r;
assert(j);
assert(e);
@@ -2127,20 +2154,10 @@ static void process_inotify_event(sd_journal *j, struct inotify_event *e) {
/* Event for a journal file */
- if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) {
- r = add_file(j, d->path, e->name);
- if (r < 0) {
- log_debug_errno(r, "Failed to add file %s/%s: %m",
- d->path, e->name);
- set_put_error(j, r);
- }
-
- } else if (e->mask & (IN_DELETE|IN_MOVED_FROM|IN_UNMOUNT)) {
-
- r = remove_file(j, d->path, e->name);
- if (r < 0)
- log_debug_errno(r, "Failed to remove file %s/%s: %m", d->path, e->name);
- }
+ if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB))
+ (void) add_file(j, d->path, e->name);
+ else if (e->mask & (IN_DELETE|IN_MOVED_FROM|IN_UNMOUNT))
+ remove_file(j, d->path, e->name);
} else if (!d->is_root && e->len == 0) {
@@ -2153,11 +2170,8 @@ static void process_inotify_event(sd_journal *j, struct inotify_event *e) {
/* Event for root directory */
- if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB)) {
- r = add_directory(j, d->path, e->name);
- if (r < 0)
- log_debug_errno(r, "Failed to add directory %s/%s: %m", d->path, e->name);
- }
+ if (e->mask & (IN_CREATE|IN_MOVED_TO|IN_MODIFY|IN_ATTRIB))
+ (void) add_directory(j, d->path, e->name);
}
return;
@@ -2166,7 +2180,7 @@ static void process_inotify_event(sd_journal *j, struct inotify_event *e) {
if (e->mask & IN_IGNORED)
return;
- log_warning("Unknown inotify event.");
+ log_debug("Unknown inotify event.");
}
static int determine_change(sd_journal *j) {
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-13 21:23:45 +0000