}
static int drop_from_file(const char *fn, uint64_t keep) {
- int r, k;
- uint32_t hi, lo;
+ _cleanup_free_ char *p = NULL;
uint64_t current, after;
- char *p;
+ uint32_t hi, lo;
+ int r, k;
r = read_one_line_file(fn, &p);
if (r < 0)
assert_cc(sizeof(lo) == sizeof(unsigned));
k = sscanf(p, "%u %u", &lo, &hi);
- free(p);
-
if (k != 2)
return -EIO;
lo = (unsigned) (after & 0xFFFFFFFFULL);
hi = (unsigned) ((after >> 32ULL) & 0xFFFFFFFFULL);
- if (asprintf(&p, "%u %u", lo, hi) < 0)
- return -ENOMEM;
-
- r = write_string_file(fn, p, WRITE_STRING_FILE_CREATE);
- free(p);
-
- return r;
+ return write_string_filef(fn, WRITE_STRING_FILE_CREATE, "%u %u", lo, hi);
}
int capability_bounding_set_drop_usermode(uint64_t keep) {
return 0;
}
+int write_string_filef(
+ const char *fn,
+ WriteStringFileFlags flags,
+ const char *format, ...) {
+
+ _cleanup_free_ char *p = NULL;
+ va_list ap;
+ int r;
+
+ va_start(ap, format);
+ r = vasprintf(&p, format, ap);
+ va_end(ap);
+
+ if (r < 0)
+ return -ENOMEM;
+
+ return write_string_file(fn, p, flags);
+}
+
int read_one_line_file(const char *fn, char **line) {
_cleanup_fclose_ FILE *f = NULL;
int r;
return write_string_file_ts(fn, line, flags, NULL);
}
+int write_string_filef(const char *fn, WriteStringFileFlags flags, const char *format, ...) _printf_(3, 4);
+
int read_one_line_file(const char *fn, char **line);
int read_full_file(const char *fn, char **contents, size_t *size);
int read_full_stream(FILE *f, char **contents, size_t *size);
unsigned long v;
int r;
- /* Let's bump the net.unix.max_dgram_qlen sysctl. The kernel
- * default of 16 is simply too low. We set the value really
- * really early during boot, so that it is actually applied to
- * all our sockets, including the $NOTIFY_SOCKET one. */
+ /* Let's bump the net.unix.max_dgram_qlen sysctl. The kernel default of 16 is simply too low. We set the value
+ * really really early during boot, so that it is actually applied to all our sockets, including the
+ * $NOTIFY_SOCKET one. */
r = read_one_line_file("/proc/sys/net/unix/max_dgram_qlen", &qlen);
if (r < 0)
r = safe_atolu(qlen, &v);
if (r < 0)
- return log_warning_errno(r, "Failed to parse AF_UNIX datagram queue length, ignoring: %m");
+ return log_warning_errno(r, "Failed to parse AF_UNIX datagram queue length '%s', ignoring: %m", qlen);
if (v >= DEFAULT_UNIX_MAX_DGRAM_QLEN)
return 0;
- qlen = mfree(qlen);
- if (asprintf(&qlen, "%lu\n", DEFAULT_UNIX_MAX_DGRAM_QLEN) < 0)
- return log_oom();
-
- r = write_string_file("/proc/sys/net/unix/max_dgram_qlen", qlen, 0);
+ r = write_string_filef("/proc/sys/net/unix/max_dgram_qlen", 0, "%lu", DEFAULT_UNIX_MAX_DGRAM_QLEN);
if (r < 0)
return log_full_errno(IN_SET(r, -EROFS, -EPERM, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
"Failed to bump AF_UNIX datagram queue length, ignoring: %m");