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treewide: Standardise on 'now' for current timestamp variables

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In a number of places we pass around a struct timespec representing the
(more or less) current time.  Sometimes we call it 'now', and sometimes we
call it 'ts'.  Standardise on the more informative 'now'.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
David Gibson 2024-01-16 11:50:32 +11:00 • committed by Stefano Brivio
parent 17bbab1c97
commit 8563e7c870
7 changed files with 37 additions and 37 deletions

34
log.c
View file

@ -216,11 +216,11 @@ void logfile_init(const char *name, const char *path, size_t size)
/**
* logfile_rotate_fallocate() - Write header, set log_written after fallocate()
* @fd: Log file descriptor
* @ts: Current timestamp
* @now: Current timestamp
*
* #syscalls lseek ppc64le:_llseek ppc64:_llseek armv6l:_llseek armv7l:_llseek
*/
static void logfile_rotate_fallocate(int fd, const struct timespec *ts)
static void logfile_rotate_fallocate(int fd, const struct timespec *now)
{
char buf[BUFSIZ];
const char *nl;
@ -233,8 +233,8 @@ static void logfile_rotate_fallocate(int fd, const struct timespec *ts)
n = snprintf(buf, BUFSIZ,
"%s - log truncated at %lli.%04lli", log_header,
(long long int)(ts->tv_sec - log_start),
(long long int)(ts->tv_nsec / (100L * 1000)));
(long long int)(now->tv_sec - log_start),
(long long int)(now->tv_nsec / (100L * 1000)));
/* Avoid partial lines by padding the header with spaces */
nl = memchr(buf + n + 1, '\n', BUFSIZ - n - 1);
@ -253,12 +253,12 @@ static void logfile_rotate_fallocate(int fd, const struct timespec *ts)
/**
* logfile_rotate_move() - Fallback: move recent entries toward start, then cut
* @fd: Log file descriptor
* @ts: Current timestamp
* @now: Current timestamp
*
* #syscalls lseek ppc64le:_llseek ppc64:_llseek armv6l:_llseek armv7l:_llseek
* #syscalls ftruncate
*/
static void logfile_rotate_move(int fd, const struct timespec *ts)
static void logfile_rotate_move(int fd, const struct timespec *now)
{
int header_len, write_offset, end, discard, n;
char buf[BUFSIZ];
@ -266,8 +266,8 @@ static void logfile_rotate_move(int fd, const struct timespec *ts)
header_len = snprintf(buf, BUFSIZ,
"%s - log truncated at %lli.%04lli\n", log_header,
(long long int)(ts->tv_sec - log_start),
(long long int)(ts->tv_nsec / (100L * 1000)));
(long long int)(now->tv_sec - log_start),
(long long int)(now->tv_nsec / (100L * 1000)));
if (lseek(fd, 0, SEEK_SET) == -1)
return;
if (write(fd, buf, header_len) == -1)
@ -316,7 +316,7 @@ out:
/**
* logfile_rotate() - "Rotate" log file once it's full
* @fd: Log file descriptor
* @ts: Current timestamp
* @now: Current timestamp
*
* Return: 0 on success, negative error code on failure
*
@ -324,7 +324,7 @@ out:
*
* fallocate() passed as EXTRA_SYSCALL only if FALLOC_FL_COLLAPSE_RANGE is there
*/
static int logfile_rotate(int fd, const struct timespec *ts)
static int logfile_rotate(int fd, const struct timespec *now)
{
if (fcntl(fd, F_SETFL, O_RDWR /* Drop O_APPEND: explicit lseek() */))
return -errno;
@ -332,10 +332,10 @@ static int logfile_rotate(int fd, const struct timespec *ts)
#ifdef FALLOC_FL_COLLAPSE_RANGE
/* Only for Linux >= 3.15, extent-based ext4 or XFS, glibc >= 2.18 */
if (!fallocate(fd, FALLOC_FL_COLLAPSE_RANGE, 0, log_cut_size))
logfile_rotate_fallocate(fd, ts);
logfile_rotate_fallocate(fd, now);
else
#endif
logfile_rotate_move(fd, ts);
logfile_rotate_move(fd, now);
if (fcntl(fd, F_SETFL, O_RDWR | O_APPEND))
return -errno;
@ -351,16 +351,16 @@ static int logfile_rotate(int fd, const struct timespec *ts)
*/
void logfile_write(int pri, const char *format, va_list ap)
{
struct timespec ts;
struct timespec now;
char buf[BUFSIZ];
int n;
if (clock_gettime(CLOCK_REALTIME, &ts))
if (clock_gettime(CLOCK_REALTIME, &now))
return;
n = snprintf(buf, BUFSIZ, "%lli.%04lli: %s",
(long long int)(ts.tv_sec - log_start),
(long long int)(ts.tv_nsec / (100L * 1000)),
(long long int)(now.tv_sec - log_start),
(long long int)(now.tv_nsec / (100L * 1000)),
logfile_prefix[pri]);
n += vsnprintf(buf + n, BUFSIZ - n, format, ap);
@ -368,7 +368,7 @@ void logfile_write(int pri, const char *format, va_list ap)
if (format[strlen(format)] != '\n')
n += snprintf(buf + n, BUFSIZ - n, "\n");
if ((log_written + n >= log_size) && logfile_rotate(log_file, &ts))
if ((log_written + n >= log_size) && logfile_rotate(log_file, &now))
return;
if ((n = write(log_file, buf, n)) >= 0)