diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/poll.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/poll.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/sysdeps/unix/sysv/linux/poll.c b/sysdeps/unix/sysv/linux/poll.c index 337b85005f..875c3b48f8 100644 --- a/sysdeps/unix/sysv/linux/poll.c +++ b/sysdeps/unix/sysv/linux/poll.c @@ -22,7 +22,9 @@ extern int __syscall_poll __P ((struct pollfd *fds, unsigned int nfds, int timeout)); -extern int __emulate_poll __P ((struct pollfd *fds, unsigned long int nfds, +weak_extern (__syscall_poll) + +static int __emulate_poll __P ((struct pollfd *fds, unsigned long int nfds, int timeout)); /* The real implementation. */ @@ -33,13 +35,17 @@ poll (fds, nfds, timeout) int timeout; { static int must_emulate = 0; + int (*syscall) __P ((struct pollfd *, unsigned int, int)) = __syscall_poll; if (!must_emulate) { - int retval = __syscall_poll (fds, nfds, timeout); + if (syscall) + { + int retval = __syscall_poll (fds, nfds, timeout); - if (retval >= 0 || errno != ENOSYS) - return retval; + if (retval >= 0 || errno != ENOSYS) + return retval; + } must_emulate = 1; } @@ -49,5 +55,5 @@ poll (fds, nfds, timeout) /* Get the emulation code. */ -#define poll(fds, nfds, timeout) __emulate_poll (fds, nfds, timeout) +#define poll(fds, nfds, timeout) static __emulate_poll (fds, nfds, timeout) #include <sysdeps/unix/bsd/poll.c> |