#include <sys/stat.h>
#include <sys/statvfs.h>
#include <unistd.h>
-
-#ifdef HAVE_XATTR
-#include <attr/xattr.h>
-#endif
+#include <sys/xattr.h>
#include "journal-def.h"
#include "journal-file.h"
#include "util.h"
struct vacuum_info {
- off_t usage;
+ uint64_t usage;
char *filename;
uint64_t realtime;
unsigned long long *realtime) {
usec_t x;
-
-#ifdef HAVE_XATTR
uint64_t crtime;
_cleanup_free_ const char *path = NULL;
-#endif
/* The timestamp was determined by the file name, but let's
* see if the file might actually be older than the file name
assert(realtime);
x = timespec_load(&st->st_ctim);
- if (x > 0 && x != (usec_t) -1 && x < *realtime)
+ if (x > 0 && x != USEC_INFINITY && x < *realtime)
*realtime = x;
x = timespec_load(&st->st_atim);
- if (x > 0 && x != (usec_t) -1 && x < *realtime)
+ if (x > 0 && x != USEC_INFINITY && x < *realtime)
*realtime = x;
x = timespec_load(&st->st_mtim);
- if (x > 0 && x != (usec_t) -1 && x < *realtime)
+ if (x > 0 && x != USEC_INFINITY && x < *realtime)
*realtime = x;
-#ifdef HAVE_XATTR
/* Let's read the original creation time, if possible. Ideally
* we'd just query the creation time the FS might provide, but
* unfortunately there's currently no sane API to query
if (crtime > 0 && crtime != (uint64_t) -1 && crtime < *realtime)
*realtime = crtime;
}
-#endif
+}
+
+static int journal_file_empty(int dir_fd, const char *name) {
+ _cleanup_close_ int fd;
+ struct stat st;
+ le64_t n_entries;
+ ssize_t n;
+
+ fd = openat(dir_fd, name, O_RDONLY|O_CLOEXEC|O_NOFOLLOW|O_NONBLOCK);
+ if (fd < 0)
+ return -errno;
+
+ if (fstat(fd, &st) < 0)
+ return -errno;
+
+ /* If an offline file doesn't even have a header we consider it empty */
+ if (st.st_size < (off_t) sizeof(Header))
+ return 1;
+
+ /* If the number of entries is empty, we consider it empty, too */
+ n = pread(fd, &n_entries, sizeof(n_entries), offsetof(Header, n_entries));
+ if (n < 0)
+ return -errno;
+ if (n != sizeof(n_entries))
+ return -EIO;
+
+ return le64toh(n_entries) <= 0;
}
int journal_directory_vacuum(
const char *directory,
uint64_t max_use,
- uint64_t min_free,
usec_t max_retention_usec,
- usec_t *oldest_usec) {
+ usec_t *oldest_usec,
+ bool verbose) {
- DIR *d;
+ _cleanup_closedir_ DIR *d = NULL;
int r = 0;
struct vacuum_info *list = NULL;
- unsigned n_list = 0, n_allocated = 0, i;
- uint64_t sum = 0;
+ unsigned n_list = 0, i;
+ size_t n_allocated = 0;
+ uint64_t sum = 0, freed = 0;
usec_t retention_limit = 0;
+ char sbytes[FORMAT_BYTES_MAX];
assert(directory);
- if (max_use <= 0 && min_free <= 0 && max_retention_usec <= 0)
+ if (max_use <= 0 && max_retention_usec <= 0)
return 0;
if (max_retention_usec > 0) {
return -errno;
for (;;) {
- int k;
struct dirent *de;
- union dirent_storage buf;
size_t q;
struct stat st;
char *p;
sd_id128_t seqnum_id;
bool have_seqnum;
- k = readdir_r(d, &buf.de, &de);
- if (k != 0) {
- r = -k;
+ errno = 0;
+ de = readdir(d);
+ if (!de && errno != 0) {
+ r = -errno;
goto finish;
}
have_seqnum = false;
} else
+ /* We do not vacuum active files or unknown files! */
continue;
- patch_realtime(directory, de->d_name, &st, &realtime);
+ if (journal_file_empty(dirfd(d), p)) {
+ /* Always vacuum empty non-online files. */
- if (n_list >= n_allocated) {
- struct vacuum_info *j;
+ uint64_t size = 512UL * (uint64_t) st.st_blocks;
- n_allocated = MAX(n_allocated * 2U, 8U);
- j = realloc(list, n_allocated * sizeof(struct vacuum_info));
- if (!j) {
- free(p);
- r = -ENOMEM;
- goto finish;
- }
+ if (unlinkat(dirfd(d), p, 0) >= 0) {
+ log_full(verbose ? LOG_INFO : LOG_DEBUG, "Deleted empty archived journal %s/%s (%s).", directory, p, format_bytes(sbytes, sizeof(sbytes), size));
+ freed += size;
+ } else if (errno != ENOENT)
+ log_warning("Failed to delete empty archived journal %s/%s: %m", directory, p);
- list = j;
+ free(p);
+ continue;
}
+ patch_realtime(directory, p, &st, &realtime);
+
+ GREEDY_REALLOC(list, n_allocated, n_list + 1);
+
list[n_list].filename = p;
list[n_list].usage = 512UL * (uint64_t) st.st_blocks;
list[n_list].seqnum = seqnum;
n_list ++;
}
- if (n_list > 0)
- qsort(list, n_list, sizeof(struct vacuum_info), vacuum_compare);
+ qsort_safe(list, n_list, sizeof(struct vacuum_info), vacuum_compare);
for (i = 0; i < n_list; i++) {
- struct statvfs ss;
-
- if (fstatvfs(dirfd(d), &ss) < 0) {
- r = -errno;
- goto finish;
- }
-
if ((max_retention_usec <= 0 || list[i].realtime >= retention_limit) &&
- (max_use <= 0 || sum <= max_use) &&
- (min_free <= 0 || (uint64_t) ss.f_bavail * (uint64_t) ss.f_bsize >= min_free))
+ (max_use <= 0 || sum <= max_use))
break;
if (unlinkat(dirfd(d), list[i].filename, 0) >= 0) {
- log_debug("Deleted archived journal %s/%s.", directory, list[i].filename);
- sum -= list[i].usage;
+ log_full(verbose ? LOG_INFO : LOG_DEBUG, "Deleted archived journal %s/%s (%s).", directory, list[i].filename, format_bytes(sbytes, sizeof(sbytes), list[i].usage));
+ freed += list[i].usage;
+
+ if (list[i].usage < sum)
+ sum -= list[i].usage;
+ else
+ sum = 0;
+
} else if (errno != ENOENT)
- log_warning("Failed to delete %s/%s: %m", directory, list[i].filename);
+ log_warning("Failed to delete archived journal %s/%s: %m", directory, list[i].filename);
}
if (oldest_usec && i < n_list && (*oldest_usec == 0 || list[i].realtime < *oldest_usec))
finish:
for (i = 0; i < n_list; i++)
free(list[i].filename);
-
free(list);
- if (d)
- closedir(d);
+ log_full(verbose ? LOG_INFO : LOG_DEBUG, "Vacuuming done, freed %s of archived journals on disk.", format_bytes(sbytes, sizeof(sbytes), freed));
return r;
}
~ianmdlvl / elogind.git / blobdiff