diff options
Diffstat (limited to 'libpthread/nptl/sysdeps/unix/sysv/linux/raise.c')
| -rw-r--r-- | libpthread/nptl/sysdeps/unix/sysv/linux/raise.c | 51 |
1 files changed, 23 insertions, 28 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/raise.c b/libpthread/nptl/sysdeps/unix/sysv/linux/raise.c index 6b159384f..f74cd0be3 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/raise.c +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/raise.c @@ -20,37 +20,32 @@ #include <limits.h> #include <signal.h> #include <sysdep.h> -#include <pthreadP.h> - +#include <nptl-signals.h> int raise (int sig) { - struct pthread *pd = THREAD_SELF; - pid_t pid = THREAD_GETMEM (pd, pid); - pid_t selftid = THREAD_GETMEM (pd, tid); - if (selftid == 0) - { - /* This system call is not supposed to fail. */ -#ifdef INTERNAL_SYSCALL - INTERNAL_SYSCALL_DECL (err); - selftid = INTERNAL_SYSCALL (gettid, err, 0); -#else - selftid = INLINE_SYSCALL (gettid, 0); -#endif - THREAD_SETMEM (pd, tid, selftid); - - /* We do not set the PID field in the TID here since we might be - called from a signal handler while the thread executes fork. */ - pid = selftid; - } - else - /* raise is an async-safe function. It could be called while the - fork/vfork function temporarily invalidated the PID field. Adjust for - that. */ - if (__builtin_expect (pid <= 0, 0)) - pid = (pid & INT_MAX) == 0 ? selftid : -pid; - - return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig); + /* rt_sigprocmask may fail if: + + 1. sigsetsize != sizeof (sigset_t) (EINVAL) + 2. a failure in copy from/to user space (EFAULT) + 3. an invalid 'how' operation (EINVAL) + + The first case is already handle in glibc syscall call by using the arch + defined _NSIG. Second case is handled by using a stack allocated mask. + The last one should be handled by the block/unblock functions. */ + + sigset_t set; + __libc_signal_block_app (&set); + + INTERNAL_SYSCALL_DECL (err); + pid_t pid = INTERNAL_SYSCALL (getpid, err, 0); + pid_t tid = INTERNAL_SYSCALL (gettid, err, 0); + + int ret = INLINE_SYSCALL (tgkill, 3, pid, tid, sig); + + __libc_signal_restore_set (&set); + + return ret; } libc_hidden_def (raise) |