| Rich Felker | 0b44a03 | 2011-02-12 00:22:29 -0500 | [diff] [blame] | 1 | #include <stdio.h> |
| 2 | #include <string.h> |
| 3 | #include <errno.h> |
| 4 | #include "stdio_impl.h" |
| 5 | |
| 6 | void perror(const char *msg) |
| 7 | { |
| Rich Felker | 0b44a03 | 2011-02-12 00:22:29 -0500 | [diff] [blame] | 8 | FILE *f = stderr; |
| 9 | char *errstr = strerror(errno); |
| 10 | |
| 11 | FLOCK(f); |
| 12 | |
| 13 | if (msg) { |
| Rich Felker | 7683fce | 2011-07-30 06:11:16 -0400 | [diff] [blame] | 14 | fwrite(msg, strlen(msg), 1, f); |
| 15 | fputc(':', f); |
| 16 | fputc(' ', f); |
| Rich Felker | 0b44a03 | 2011-02-12 00:22:29 -0500 | [diff] [blame] | 17 | } |
| Rich Felker | 7683fce | 2011-07-30 06:11:16 -0400 | [diff] [blame] | 18 | fwrite(errstr, strlen(errstr), 1, f); |
| 19 | fputc('\n', f); |
| Rich Felker | 0b44a03 | 2011-02-12 00:22:29 -0500 | [diff] [blame] | 20 | |
| 21 | FUNLOCK(f); |
| Rich Felker | 0b44a03 | 2011-02-12 00:22:29 -0500 | [diff] [blame] | 22 | } |