| 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) { |
| Junio C Hamano | f3123c4 | 2005-10-22 08:28:13 | [diff] [blame] | 6 | char buffer[8192]; |
| Johan Herland | 8a912bc | 2007-05-15 12:49:22 | [diff] [blame] | 7 | ssize_t len = xread(ifd, buffer, sizeof(buffer)); |
| Junio C Hamano | f3123c4 | 2005-10-22 08:28:13 | [diff] [blame] | 8 | if (!len) |
| 9 | break; |
| 10 | if (len < 0) { |
| Junio C Hamano | f3123c4 | 2005-10-22 08:28:13 | [diff] [blame] | 11 | return error("copy-fd: read returned %s", |
| Steffen Prohaska | b29763a | 2014-08-26 15:23:24 | [diff] [blame] | 12 | strerror(errno)); |
| Junio C Hamano | f3123c4 | 2005-10-22 08:28:13 | [diff] [blame] | 13 | } |
| Steffen Prohaska | b29763a | 2014-08-26 15:23:24 | [diff] [blame] | 14 | if (write_in_full(ofd, buffer, len) < 0) |
| 15 | return error("copy-fd: write returned %s", |
| 16 | strerror(errno)); |
| Junio C Hamano | f3123c4 | 2005-10-22 08:28:13 | [diff] [blame] | 17 | } |
| Junio C Hamano | f3123c4 | 2005-10-22 08:28:13 | [diff] [blame] | 18 | return 0; |
| 19 | } |
| Daniel Barkalow | 1468bd4 | 2008-02-25 19:24:48 | [diff] [blame] | 20 | |
| Clemens Buchacher | f7835a2 | 2009-09-12 09:03:48 | [diff] [blame] | 21 | static int copy_times(const char *dst, const char *src) |
| 22 | { |
| 23 | struct stat st; |
| 24 | struct utimbuf times; |
| 25 | if (stat(src, &st) < 0) |
| 26 | return -1; |
| 27 | times.actime = st.st_atime; |
| 28 | times.modtime = st.st_mtime; |
| 29 | if (utime(dst, ×) < 0) |
| 30 | return -1; |
| 31 | return 0; |
| 32 | } |
| 33 | |
| Daniel Barkalow | 1468bd4 | 2008-02-25 19:24:48 | [diff] [blame] | 34 | int copy_file(const char *dst, const char *src, int mode) |
| 35 | { |
| 36 | int fdi, fdo, status; |
| 37 | |
| 38 | mode = (mode & 0111) ? 0777 : 0666; |
| 39 | if ((fdi = open(src, O_RDONLY)) < 0) |
| 40 | return fdi; |
| 41 | if ((fdo = open(dst, O_WRONLY | O_CREAT | O_EXCL, mode)) < 0) { |
| 42 | close(fdi); |
| 43 | return fdo; |
| 44 | } |
| 45 | status = copy_fd(fdi, fdo); |
| Steffen Prohaska | b29763a | 2014-08-26 15:23:24 | [diff] [blame] | 46 | close(fdi); |
| Daniel Barkalow | 1468bd4 | 2008-02-25 19:24:48 | [diff] [blame] | 47 | if (close(fdo) != 0) |
| Ariel Badichi | 8b1f6de | 2008-04-23 01:05:29 | [diff] [blame] | 48 | return error("%s: close error: %s", dst, strerror(errno)); |
| Daniel Barkalow | 1468bd4 | 2008-02-25 19:24:48 | [diff] [blame] | 49 | |
| 50 | if (!status && adjust_shared_perm(dst)) |
| 51 | return -1; |
| 52 | |
| 53 | return status; |
| 54 | } |
| Clemens Buchacher | f7835a2 | 2009-09-12 09:03:48 | [diff] [blame] | 55 | |
| 56 | int copy_file_with_time(const char *dst, const char *src, int mode) |
| 57 | { |
| 58 | int status = copy_file(dst, src, mode); |
| 59 | if (!status) |
| 60 | return copy_times(dst, src); |
| 61 | return status; |
| 62 | } |
