| Rich Felker | 0b44a03 | 2011-02-12 00:22:29 -0500 | [diff] [blame] | 1 | #include "stdio_impl.h" |
| 2 | |||||
| 3 | int fileno(FILE *f) | ||||
| 4 | { | ||||
| Rich Felker | c8cb6bc | 2012-10-24 23:16:41 -0400 | [diff] [blame] | 5 | /* f->fd never changes, but the lock must be obtained and released |
| 6 | * anyway since this function cannot return while another thread | ||||
| 7 | * holds the lock. */ | ||||
| 8 | FLOCK(f); | ||||
| 9 | FUNLOCK(f); | ||||
| Rich Felker | 0b44a03 | 2011-02-12 00:22:29 -0500 | [diff] [blame] | 10 | return f->fd; |
| 11 | } | ||||
| 12 | |||||
| 13 | weak_alias(fileno, fileno_unlocked); | ||||