* their own coredumps */
acl = acl_get_fd(fd);
- if (!acl) {
- log_error("Failed to get ACL: %m");
- return -errno;
- }
+ if (!acl)
+ return log_error_errno(errno, "Failed to get ACL: %m");
if (acl_create_entry(&acl, &entry) < 0 ||
acl_set_tag_type(entry, ACL_USER) < 0 ||
acl_set_qualifier(entry, &uid) < 0) {
- log_error("Failed to patch ACL: %m");
+ log_error_errno(errno, "Failed to patch ACL: %m");
return -errno;
}
if (acl_get_permset(entry, &permset) < 0 ||
acl_add_perm(permset, ACL_READ) < 0 ||
calc_acl_mask_if_needed(&acl) < 0) {
- log_warning("Failed to patch ACL: %m");
+ log_warning_errno(errno, "Failed to patch ACL: %m");
return -errno;
}
- if (acl_set_fd(fd, acl) < 0) {
- log_error("Failed to apply ACL: %m");
- return -errno;
- }
+ if (acl_set_fd(fd, acl) < 0)
+ return log_error_errno(errno, "Failed to apply ACL: %m");
#endif
return 0;
fix_acl(fd, uid);
fix_xattr(fd, info);
- if (fsync(fd) < 0) {
- log_error("Failed to sync coredump %s: %m", filename);
- return -errno;
- }
+ if (fsync(fd) < 0)
+ return log_error_errno(errno, "Failed to sync coredump %s: %m", filename);
- if (rename(filename, target) < 0) {
- log_error("Failed to rename coredump %s -> %s: %m", filename, target);
- return -errno;
- }
+ if (rename(filename, target) < 0)
+ return log_error_errno(errno, "Failed to rename coredump %s -> %s: %m", filename, target);
return 0;
}
if (!filename)
return 1;
- if (unlink(filename) < 0 && errno != ENOENT) {
- log_error("Failed to unlink %s: %m", filename);
- return -errno;
- }
+ if (unlink(filename) < 0 && errno != ENOENT)
+ return log_error_errno(errno, "Failed to unlink %s: %m", filename);
return 1;
}
assert(ret_size);
r = make_filename(info, &fn);
- if (r < 0) {
- log_error("Failed to determine coredump file name: %s", strerror(-r));
- return r;
- }
+ if (r < 0)
+ return log_error_errno(r, "Failed to determine coredump file name: %m");
tmp = tempfn_random(fn);
if (!tmp)
mkdir_p_label("/var/lib/systemd/coredump", 0755);
fd = open(tmp, O_CREAT|O_EXCL|O_RDWR|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW, 0640);
- if (fd < 0) {
- log_error("Failed to create coredump file %s: %m", tmp);
- return -errno;
- }
+ if (fd < 0)
+ return log_error_errno(errno, "Failed to create coredump file %s: %m", tmp);
r = copy_bytes(STDIN_FILENO, fd, arg_process_size_max);
if (r == -EFBIG) {
log_error("Not enough disk space for coredump of %s (%s), refusing.", info[INFO_PID], info[INFO_COMM]);
goto fail;
} else if (r < 0) {
- log_error("Failed to dump coredump to file: %s", strerror(-r));
+ log_error_errno(r, "Failed to dump coredump to file: %m");
goto fail;
}
if (fstat(fd, &st) < 0) {
- log_error("Failed to fstat coredump %s: %m", tmp);
+ log_error_errno(errno, "Failed to fstat coredump %s: %m", tmp);
goto fail;
}
if (lseek(fd, 0, SEEK_SET) == (off_t) -1) {
- log_error("Failed to seek on %s: %m", tmp);
+ log_error_errno(errno, "Failed to seek on %s: %m", tmp);
goto fail;
}
fd_compressed = open(tmp_compressed, O_CREAT|O_EXCL|O_RDWR|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW, 0640);
if (fd_compressed < 0) {
- log_error("Failed to create file %s: %m", tmp_compressed);
+ log_error_errno(errno, "Failed to create file %s: %m", tmp_compressed);
goto uncompressed;
}
r = compress_stream(fd, fd_compressed, -1);
if (r < 0) {
- log_error("Failed to compress %s: %s", tmp_compressed, strerror(-r));
+ log_error_errno(r, "Failed to compress %s: %m", tmp_compressed);
goto fail_compressed;
}
assert(ret);
assert(ret_size);
- if (lseek(fd, 0, SEEK_SET) == (off_t) -1) {
- log_warning("Failed to seek: %m");
- return -errno;
- }
+ if (lseek(fd, 0, SEEK_SET) == (off_t) -1)
+ return log_warning_errno(errno, "Failed to seek: %m");
field = malloc(9 + size);
if (!field) {
memcpy(field, "COREDUMP=", 9);
n = read(fd, field + 9, size);
- if (n < 0) {
- log_error("Failed to read core data: %s", strerror(-n));
- return (int) n;
- }
+ if (n < 0)
+ return log_error_errno((int) n, "Failed to read core data: %m");
if ((size_t) n < size) {
log_error("Core data too short.");
return -EIO;
*/
static int compose_open_fds(pid_t pid, char **open_fds) {
_cleanup_fclose_ FILE *stream = NULL;
- char path[PATH_MAX], line[LINE_MAX];
size_t ignored_size;
- const char *fddelim = "";
+ const char *fddelim = "", *path;
struct dirent *dent = NULL;
_cleanup_closedir_ DIR *proc_fd_dir = NULL;
+ _cleanup_close_ int proc_fdinfo_fd = -1;
int r = 0;
assert(pid >= 0);
assert(open_fds != NULL);
- sprintf(path, "/proc/"PID_FMT"/fd", pid);
+ path = procfs_file_alloca(pid, "fd");
proc_fd_dir = opendir(path);
+ if (!proc_fd_dir)
+ return -errno;
- if (proc_fd_dir == NULL)
- return -ENOENT;
+ proc_fdinfo_fd = openat(dirfd(proc_fd_dir), "../fdinfo",
+ O_DIRECTORY|O_NOFOLLOW|O_CLOEXEC|O_PATH);
+ if (proc_fdinfo_fd < 0)
+ return -errno;
stream = open_memstream(open_fds, &ignored_size);
if (!stream)
for (dent = readdir(proc_fd_dir); dent != NULL; dent = readdir(proc_fd_dir)) {
_cleanup_free_ char *fdname = NULL;
+ int fd;
_cleanup_fclose_ FILE *fdinfo = NULL;
+ char line[LINE_MAX];
if (dent->d_name[0] == '.' || strcmp(dent->d_name, "..") == 0)
continue;
- /* Too long path is unlikely a path to valid file descriptor in /proc/[pid]/fd */
- /* Skip it. */
- r = snprintf(path, sizeof(path), "/proc/"PID_FMT"/fd/%s", pid, dent->d_name);
- if (r >= (int)sizeof(path))
- continue;
-
- r = readlink_malloc(path, &fdname);
+ r = readlinkat_malloc(dirfd(proc_fd_dir), dent->d_name, &fdname);
if (r < 0)
return r;
fddelim = "\n";
/* Use the directory entry from /proc/[pid]/fd with /proc/[pid]/fdinfo */
-
- /* Too long path is unlikely a path to valid file descriptor info in /proc/[pid]/fdinfo */
- /* Skip it. */
- r = snprintf(path, sizeof(path), "/proc/"PID_FMT"/fdinfo/%s", pid, dent->d_name);
- if (r >= (int)sizeof(path))
+ fd = openat(proc_fdinfo_fd, dent->d_name, O_NOFOLLOW|O_CLOEXEC|O_RDONLY);
+ if (fd < 0)
continue;
- fdinfo = fopen(path, "re");
- if (fdinfo == NULL)
+ fdinfo = fdopen(fd, "re");
+ if (fdinfo == NULL) {
+ close(fd);
continue;
+ }
while(fgets(line, sizeof(line), fdinfo) != NULL)
fprintf(stream, "%s%s",
* thus making sure the user gets access to the core dump. */
if (setresgid(gid, gid, gid) < 0 ||
setresuid(uid, uid, uid) < 0) {
- log_error("Failed to drop privileges: %m");
+ log_error_errno(errno, "Failed to drop privileges: %m");
r = -errno;
goto finish;
}
else if (r == -EINVAL)
log_warning("Failed to generate stack trace: %s", dwfl_errmsg(dwfl_errno()));
else
- log_warning("Failed to generate stack trace: %s", strerror(-r));
+ log_warning_errno(r, "Failed to generate stack trace: %m");
}
if (!core_message)
r = sd_journal_sendv(iovec, j);
if (r < 0)
- log_error("Failed to log coredump: %s", strerror(-r));
+ log_error_errno(r, "Failed to log coredump: %m");
finish:
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;