| Junio C Hamano | f3123c4 | 2005-10-22 08:28:13 | [diff] [blame] | 1 | #include "cache.h" |
| 2 | |
| 3 | int copy_fd(int ifd, int ofd) |
| 4 | { |
| 5 | while (1) { |
| 6 | int len; |
| 7 | char buffer[8192]; |
| 8 | char *buf = buffer; |
| 9 | len = read(ifd, buffer, sizeof(buffer)); |
| 10 | if (!len) |
| 11 | break; |
| 12 | if (len < 0) { |
| 13 | if (errno == EAGAIN) |
| 14 | continue; |
| 15 | return error("copy-fd: read returned %s", |
| 16 | strerror(errno)); |
| 17 | } |
| 18 | while (1) { |
| 19 | int written = write(ofd, buf, len); |
| 20 | if (written > 0) { |
| 21 | buf += written; |
| 22 | len -= written; |
| 23 | if (!len) |
| 24 | break; |
| 25 | } |
| 26 | if (!written) |
| 27 | return error("copy-fd: write returned 0"); |
| 28 | if (errno == EAGAIN || errno == EINTR) |
| 29 | continue; |
| 30 | return error("copy-fd: write returned %s", |
| 31 | strerror(errno)); |
| 32 | } |
| 33 | } |
| 34 | close(ifd); |
| 35 | return 0; |
| 36 | } |
| 37 | |
