diff options
Diffstat (limited to 'src/util.c')
| -rw-r--r-- | src/util.c | 24 |
1 files changed, 20 insertions, 4 deletions
@@ -112,18 +112,34 @@ int writeall(int fd, void *buf, size_t n) { char *buffer = buf; - size_t ptr = 0; ssize_t r; - while (ptr < n) { + while (n) { r = write(fd, buffer, n); if (r < 0) return -1; - buffer += (size_t)ptr; - n -= (size_t)ptr; + buffer += (size_t)r; + n -= (size_t)r; } return 0; } +ssize_t +readall(int fd, void *buf, size_t n) +{ + char *buffer = buf; + size_t ptr = 0; + ssize_t r; + for (;;) { + r = read(fd, buffer + ptr, n - ptr); + if (r < 0) + return -1; + if (r == 0) + break; + r += (size_t)r; + } + return r; +} + static inline pid_t enfork(int status) |