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preload: fix sigmask block and restore race #253

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Jul 22, 2024
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preload: fix sigmask block and restore race #253

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4 changes: 2 additions & 2 deletions src/libumockdev-preload.c
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Original file line number Diff line number Diff line change
Expand Up @@ -166,13 +166,13 @@ pthread_mutex_t ioctl_lock = PTHREAD_MUTEX_INITIALIZER;
do { \
sigset_t sig_set; \
sigfillset(&sig_set); \
pthread_sigmask(SIG_SETMASK, &sig_set, &trap_path_sig_restore); \
pthread_mutex_lock (&trap_path_lock); \
pthread_sigmask(SIG_SETMASK, &sig_set, &trap_path_sig_restore); \
} while (0)
#define TRAP_PATH_UNLOCK \
do { \
pthread_mutex_unlock (&trap_path_lock); \
pthread_sigmask(SIG_SETMASK, &trap_path_sig_restore, NULL); \
pthread_mutex_unlock (&trap_path_lock); \
} while (0)

#define IOCTL_LOCK pthread_mutex_lock (&ioctl_lock)
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