diff options
Diffstat (limited to 'src/posix-lock.c')
| -rw-r--r-- | src/posix-lock.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/posix-lock.c b/src/posix-lock.c index 2e0ae92..d251d2f 100644 --- a/src/posix-lock.c +++ b/src/posix-lock.c @@ -44,6 +44,14 @@ #include "posix-lock-obj.h" +/* + * Functions called before and after blocking syscalls. + * gpgrt_set_syscall_clamp is used to set them. + */ +static void (*pre_lock_func)(void); +static void (*post_lock_func)(void); + + #if USE_POSIX_THREADS # if USE_POSIX_THREADS_WEAK /* On ELF systems it is easy to use pthreads using weak @@ -103,6 +111,16 @@ use_pthread_p (void) #endif /*USE_POSIX_THREADS*/ +/* Helper to set the clamp functions. This is called as a helper from + * _gpgrt_set_syscall_clamp to keep the function pointers local. */ +void +_gpgrt_lock_set_lock_clamp (void (*pre)(void), void (*post)(void)) +{ + pre_lock_func = pre; + post_lock_func = post; +} + + static _gpgrt_lock_t * get_lock_object (gpgrt_lock_t *lockhd) @@ -171,9 +189,13 @@ _gpgrt_lock_lock (gpgrt_lock_t *lockhd) #if USE_POSIX_THREADS if (use_pthread_p()) { + if (pre_lock_func) + pre_lock_func (); rc = pthread_mutex_lock (&lock->u.mtx); if (rc) rc = gpg_err_code_from_errno (rc); + if (post_lock_func) + post_lock_func (); } else rc = 0; /* Threads are not used. */ |