diff options
Diffstat (limited to 'lib/libc/stdio/fgets.c')
| -rw-r--r-- | lib/libc/stdio/fgets.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/lib/libc/stdio/fgets.c b/lib/libc/stdio/fgets.c index 09f6877..c478267 100644 --- a/lib/libc/stdio/fgets.c +++ b/lib/libc/stdio/fgets.c @@ -40,6 +40,11 @@ static char sccsid[] = "@(#)fgets.c 8.2 (Berkeley) 12/22/93"; #include <stdio.h> #include <string.h> +#include "local.h" +#ifdef _THREAD_SAFE +#include <pthread.h> +#include "pthread_private.h" +#endif /* * Read at most n-1 characters from the given file. @@ -59,6 +64,9 @@ fgets(buf, n, fp) if (n == 0) /* sanity check */ return (NULL); +#ifdef _THREAD_SAFE + _thread_flockfile(fp,__FILE__,__LINE__); +#endif s = buf; n--; /* leave space for NUL */ while (n != 0) { @@ -68,8 +76,12 @@ fgets(buf, n, fp) if ((len = fp->_r) <= 0) { if (__srefill(fp)) { /* EOF/error: stop with partial or no line */ - if (s == buf) + if (s == buf) { +#ifdef _THREAD_SAFE + _thread_funlockfile(fp); +#endif return (NULL); + } break; } len = fp->_r; @@ -91,6 +103,9 @@ fgets(buf, n, fp) fp->_p = t; (void)memcpy((void *)s, (void *)p, len); s[len] = 0; +#ifdef _THREAD_SAFE + _thread_funlockfile(fp); +#endif return (buf); } fp->_r -= len; @@ -100,5 +115,8 @@ fgets(buf, n, fp) n -= len; } *s = 0; +#ifdef _THREAD_SAFE + _thread_funlockfile(fp); +#endif return (buf); } |
