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| author | vanhauser-thc <vh@thc.org> | 2022-04-22 10:28:14 +0200 |
|---|---|---|
| committer | vanhauser-thc <vh@thc.org> | 2022-04-22 10:28:21 +0200 |
| commit | 7f26d133458f5034499f40129e9a5517cee21cce (patch) | |
| tree | 2cd01d3b019350de759c6f0478465197632bbab2 /include/debug.h | |
| parent | 5798c686b20ac47c4fc7f939c02ee211108c0f1f (diff) | |
| download | afl++-7f26d133458f5034499f40129e9a5517cee21cce.tar.gz | |
try repeating write
Diffstat (limited to 'include/debug.h')
| -rw-r--r-- | include/debug.h | 47 |
1 files changed, 33 insertions, 14 deletions
diff --git a/include/debug.h b/include/debug.h index 31ebd0f2..e2ee16a8 100644 --- a/include/debug.h +++ b/include/debug.h @@ -355,20 +355,39 @@ static inline const char *colorfilter(const char *x) { /* Error-checking versions of read() and write() that call RPFATAL() as appropriate. */ -#define ck_write(fd, buf, len, fn) \ - do { \ - \ - int _fd = (fd); \ - \ - s32 _len = (s32)(len); \ - s32 _res = write(_fd, (buf), _len); \ - if (_res != _len) { \ - \ - RPFATAL(_res, "Short write to %s, fd %d (%d of %d bytes)", fn, _fd, \ - _res, _len); \ - \ - } \ - \ +#define ck_write(fd, buf, len, fn) \ + do { \ + \ + if (len <= 0) break; \ + int _fd = (fd); \ + s32 _written = 0, _off = 0, _len = (s32)(len); \ + \ + do { \ + \ + s32 _res = write(_fd, (buf) + _off, _len); \ + if (_res != _len && (_res > 0 && _written + _res != _len)) { \ + \ + if (_res > 0) { \ + \ + _written += _res; \ + _len -= _res; \ + _off += _res; \ + \ + } else { \ + \ + RPFATAL(_res, "Short write to %s, fd %d (%d of %d bytes)", fn, _fd, \ + _res, _len); \ + \ + } \ + \ + } else { \ + \ + break; \ + \ + } \ + \ + } while (1); \ + \ } while (0) #define ck_read(fd, buf, len, fn) \ |