diff options
Diffstat (limited to 'libc/stdio/fseek.c')
| -rw-r--r-- | libc/stdio/fseek.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/libc/stdio/fseek.c b/libc/stdio/fseek.c index 8581b62fc..38697f53f 100644 --- a/libc/stdio/fseek.c +++ b/libc/stdio/fseek.c @@ -70,6 +70,7 @@ fseeko(FILE *fp, off_t offset, int whence) * Change any SEEK_CUR to SEEK_SET, and check `whence' argument. * After this, whence is either SEEK_SET or SEEK_END. */ + FLOCKFILE(fp); switch (whence) { case SEEK_CUR: @@ -83,8 +84,10 @@ fseeko(FILE *fp, off_t offset, int whence) curoff = fp->_offset; else { curoff = (*seekfn)(fp->_cookie, (fpos_t)0, SEEK_CUR); - if (curoff == (fpos_t)-1) + if (curoff == (fpos_t)-1) { + FUNLOCKFILE(fp); return (EOF); + } } if (fp->_flags & __SRD) { curoff -= fp->_r; @@ -105,6 +108,7 @@ fseeko(FILE *fp, off_t offset, int whence) break; default: + FUNLOCKFILE(fp); errno = EINVAL; return (EOF); } @@ -189,6 +193,7 @@ fseeko(FILE *fp, off_t offset, int whence) if (HASUB(fp)) FREEUB(fp); fp->_flags &= ~__SEOF; + FUNLOCKFILE(fp); return (0); } @@ -215,6 +220,7 @@ fseeko(FILE *fp, off_t offset, int whence) fp->_p += n; fp->_r -= n; } + FUNLOCKFILE(fp); return (0); /* @@ -224,6 +230,7 @@ fseeko(FILE *fp, off_t offset, int whence) dumb: if (__sflush(fp) || (*seekfn)(fp->_cookie, (fpos_t)offset, whence) == POS_ERR) { + FUNLOCKFILE(fp); return (EOF); } /* success: clear EOF indicator and discard ungetc() data */ @@ -233,6 +240,7 @@ dumb: fp->_r = 0; /* fp->_w = 0; */ /* unnecessary (I think...) */ fp->_flags &= ~__SEOF; + FUNLOCKFILE(fp); return (0); } |