diff options
Diffstat (limited to 'lib/libc/stdio/fvwrite.c')
| -rw-r--r-- | lib/libc/stdio/fvwrite.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/lib/libc/stdio/fvwrite.c b/lib/libc/stdio/fvwrite.c index 82a49cb..efcfffb 100644 --- a/lib/libc/stdio/fvwrite.c +++ b/lib/libc/stdio/fvwrite.c @@ -64,7 +64,7 @@ __sfvwrite(fp, uio) register struct __siov *iov; register int w, s; char *nl; - int nlknown, nldist; + int nlknown, nldist, firsttime; if ((len = uio->uio_resid) == 0) return (0); @@ -86,12 +86,21 @@ __sfvwrite(fp, uio) len = iov->iov_len; \ iov++; \ } + firsttime = 1; if (fp->_flags & __SNBF) { /* * Unbuffered: write up to BUFSIZ bytes at a time. */ do { GETIOV(;); + if (firsttime) { + if ((fp->_flags & __SAPP) && + _sseek(fp, (fpos_t)0, SEEK_END) == -1) + goto err; + /* In case FAPPEND mode is set. */ + fp->_flags &= ~__SOFF; + firsttime = 0; + } w = (*fp->_write)(fp->_cookie, p, MIN(len, BUFSIZ)); if (w <= 0) goto err; @@ -147,6 +156,14 @@ __sfvwrite(fp, uio) goto err; } else if (len >= (w = fp->_bf._size)) { /* write directly */ + if (firsttime) { + if ((fp->_flags & __SAPP) && + _sseek(fp, (fpos_t)0, SEEK_END) == -1) + goto err; + /* In case FAPPEND mode is set. */ + fp->_flags &= ~__SOFF; + firsttime = 0; + } w = (*fp->_write)(fp->_cookie, p, w); if (w <= 0) goto err; @@ -186,6 +203,14 @@ __sfvwrite(fp, uio) if (__fflush(fp)) goto err; } else if (s >= (w = fp->_bf._size)) { + if (firsttime) { + if ((fp->_flags & __SAPP) && + _sseek(fp, (fpos_t)0, SEEK_END) == -1) + goto err; + /* In case FAPPEND mode is set. */ + fp->_flags &= ~__SOFF; + firsttime = 0; + } w = (*fp->_write)(fp->_cookie, p, w); if (w <= 0) goto err; |
