Replace error prone signal() with sigaction()
Up to this date signal() was used which implementation could vary [1]. Sigaction() call is preferred. This commit introduces replacement from signal() to sigaction() by the use of signal_s() wrapper. Also remove redundant signal.h header includes. [1] https://man7.org/linux/man-pages/man2/signal.2.html Signed-off-by: Lukasz Florczak <lukasz.florczak@linux.intel.com> Signed-off-by: Jes Sorensen <jsorensen@fb.com>
This commit is contained in:
parent
cf9a109209
commit
83a379cfbd
4
Grow.c
4
Grow.c
|
@ -26,7 +26,6 @@
|
|||
#include <sys/mman.h>
|
||||
#include <stddef.h>
|
||||
#include <stdint.h>
|
||||
#include <signal.h>
|
||||
#include <sys/wait.h>
|
||||
|
||||
#if ! defined(__BIG_ENDIAN) && ! defined(__LITTLE_ENDIAN)
|
||||
|
@ -3566,7 +3565,8 @@ started:
|
|||
fd = -1;
|
||||
mlockall(MCL_FUTURE);
|
||||
|
||||
signal(SIGTERM, catch_term);
|
||||
if (signal_s(SIGTERM, catch_term) == SIG_ERR)
|
||||
goto release;
|
||||
|
||||
if (st->ss->external) {
|
||||
/* metadata handler takes it from here */
|
||||
|
|
|
@ -26,7 +26,6 @@
|
|||
#include "md_p.h"
|
||||
#include "md_u.h"
|
||||
#include <sys/wait.h>
|
||||
#include <signal.h>
|
||||
#include <limits.h>
|
||||
#include <syslog.h>
|
||||
#ifndef NO_LIBUDEV
|
||||
|
@ -435,8 +434,10 @@ static void alert(char *event, char *dev, char *disc, struct alert_info *info)
|
|||
if (mp) {
|
||||
FILE *mdstat;
|
||||
char hname[256];
|
||||
|
||||
gethostname(hname, sizeof(hname));
|
||||
signal(SIGPIPE, SIG_IGN);
|
||||
signal_s(SIGPIPE, SIG_IGN);
|
||||
|
||||
if (info->mailfrom)
|
||||
fprintf(mp, "From: %s\n", info->mailfrom);
|
||||
else
|
||||
|
|
|
@ -106,7 +106,6 @@
|
|||
#include "mdmon.h"
|
||||
#include <sys/syscall.h>
|
||||
#include <sys/socket.h>
|
||||
#include <signal.h>
|
||||
|
||||
static void close_aa(struct active_array *aa)
|
||||
{
|
||||
|
|
22
mdadm.h
22
mdadm.h
|
@ -46,6 +46,7 @@ extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence));
|
|||
#include <string.h>
|
||||
#include <syslog.h>
|
||||
#include <stdbool.h>
|
||||
#include <signal.h>
|
||||
/* Newer glibc requires sys/sysmacros.h directly for makedev() */
|
||||
#include <sys/sysmacros.h>
|
||||
#ifdef __dietlibc__
|
||||
|
@ -1729,6 +1730,27 @@ static inline char *to_subarray(struct mdstat_ent *ent, char *container)
|
|||
return &ent->metadata_version[10+strlen(container)+1];
|
||||
}
|
||||
|
||||
/**
|
||||
* signal_s() - Wrapper for sigaction() with signal()-like interface.
|
||||
* @sig: The signal to set the signal handler to.
|
||||
* @handler: The signal handler.
|
||||
*
|
||||
* Return: previous handler or SIG_ERR on failure.
|
||||
*/
|
||||
static inline sighandler_t signal_s(int sig, sighandler_t handler)
|
||||
{
|
||||
struct sigaction new_act;
|
||||
struct sigaction old_act;
|
||||
|
||||
new_act.sa_handler = handler;
|
||||
new_act.sa_flags = 0;
|
||||
|
||||
if (sigaction(sig, &new_act, &old_act) == 0)
|
||||
return old_act.sa_handler;
|
||||
|
||||
return SIG_ERR;
|
||||
}
|
||||
|
||||
#ifdef DEBUG
|
||||
#define dprintf(fmt, arg...) \
|
||||
fprintf(stderr, "%s: %s: "fmt, Name, __func__, ##arg)
|
||||
|
|
1
mdmon.c
1
mdmon.c
|
@ -56,7 +56,6 @@
|
|||
#include <errno.h>
|
||||
#include <string.h>
|
||||
#include <fcntl.h>
|
||||
#include <signal.h>
|
||||
#include <dirent.h>
|
||||
#ifdef USE_PTHREADS
|
||||
#include <pthread.h>
|
||||
|
|
|
@ -22,7 +22,6 @@
|
|||
#include "mdmon.h"
|
||||
#include <sys/syscall.h>
|
||||
#include <sys/select.h>
|
||||
#include <signal.h>
|
||||
|
||||
static char *array_states[] = {
|
||||
"clear", "inactive", "suspended", "readonly", "read-auto",
|
||||
|
|
|
@ -22,7 +22,6 @@
|
|||
#include "probe_roms.h"
|
||||
#include "mdadm.h"
|
||||
#include <unistd.h>
|
||||
#include <signal.h>
|
||||
#include <fcntl.h>
|
||||
#include <sys/mman.h>
|
||||
#include <sys/stat.h>
|
||||
|
@ -69,7 +68,8 @@ static int probe_address16(const __u16 *ptr, __u16 *val)
|
|||
|
||||
void probe_roms_exit(void)
|
||||
{
|
||||
signal(SIGBUS, SIG_DFL);
|
||||
signal_s(SIGBUS, SIG_DFL);
|
||||
|
||||
if (rom_fd >= 0) {
|
||||
close(rom_fd);
|
||||
rom_fd = -1;
|
||||
|
@ -98,7 +98,7 @@ int probe_roms_init(unsigned long align)
|
|||
if (roms_init())
|
||||
return -1;
|
||||
|
||||
if (signal(SIGBUS, sigbus) == SIG_ERR)
|
||||
if (signal_s(SIGBUS, sigbus) == SIG_ERR)
|
||||
rc = -1;
|
||||
if (rc == 0) {
|
||||
fd = open("/dev/mem", O_RDONLY);
|
||||
|
|
25
raid6check.c
25
raid6check.c
|
@ -24,7 +24,6 @@
|
|||
|
||||
#include "mdadm.h"
|
||||
#include <stdint.h>
|
||||
#include <signal.h>
|
||||
#include <sys/mman.h>
|
||||
|
||||
#define CHECK_PAGE_BITS (12)
|
||||
|
@ -130,30 +129,36 @@ void raid6_stats(int *disk, int *results, int raid_disks, int chunk_size)
|
|||
}
|
||||
|
||||
int lock_stripe(struct mdinfo *info, unsigned long long start,
|
||||
int chunk_size, int data_disks, sighandler_t *sig) {
|
||||
int chunk_size, int data_disks, sighandler_t *sig)
|
||||
{
|
||||
int rv;
|
||||
|
||||
sig[0] = signal_s(SIGTERM, SIG_IGN);
|
||||
sig[1] = signal_s(SIGINT, SIG_IGN);
|
||||
sig[2] = signal_s(SIGQUIT, SIG_IGN);
|
||||
|
||||
if (sig[0] == SIG_ERR || sig[1] == SIG_ERR || sig[2] == SIG_ERR)
|
||||
return 1;
|
||||
|
||||
if(mlockall(MCL_CURRENT | MCL_FUTURE) != 0) {
|
||||
return 2;
|
||||
}
|
||||
|
||||
sig[0] = signal(SIGTERM, SIG_IGN);
|
||||
sig[1] = signal(SIGINT, SIG_IGN);
|
||||
sig[2] = signal(SIGQUIT, SIG_IGN);
|
||||
|
||||
rv = sysfs_set_num(info, NULL, "suspend_lo", start * chunk_size * data_disks);
|
||||
rv |= sysfs_set_num(info, NULL, "suspend_hi", (start + 1) * chunk_size * data_disks);
|
||||
return rv * 256;
|
||||
}
|
||||
|
||||
int unlock_all_stripes(struct mdinfo *info, sighandler_t *sig) {
|
||||
int unlock_all_stripes(struct mdinfo *info, sighandler_t *sig)
|
||||
{
|
||||
int rv;
|
||||
rv = sysfs_set_num(info, NULL, "suspend_lo", 0x7FFFFFFFFFFFFFFFULL);
|
||||
rv |= sysfs_set_num(info, NULL, "suspend_hi", 0);
|
||||
rv |= sysfs_set_num(info, NULL, "suspend_lo", 0);
|
||||
|
||||
signal(SIGQUIT, sig[2]);
|
||||
signal(SIGINT, sig[1]);
|
||||
signal(SIGTERM, sig[0]);
|
||||
signal_s(SIGQUIT, sig[2]);
|
||||
signal_s(SIGINT, sig[1]);
|
||||
signal_s(SIGTERM, sig[0]);
|
||||
|
||||
if(munlockall() != 0)
|
||||
return 3;
|
||||
|
|
Loading…
Reference in New Issue