gitweb: use new Git::Repo API, and add optional caching
[git/gitweb-caching.git] / copy.c
blobe54d15aced7595ccb11423b0de121db9051ad1f3
1 #include "cache.h"
3 int copy_fd(int ifd, int ofd)
5 while (1) {
6 char buffer[8192];
7 char *buf = buffer;
8 ssize_t len = xread(ifd, buffer, sizeof(buffer));
9 if (!len)
10 break;
11 if (len < 0) {
12 int read_error = errno;
13 close(ifd);
14 return error("copy-fd: read returned %s",
15 strerror(read_error));
17 while (len) {
18 int written = xwrite(ofd, buf, len);
19 if (written > 0) {
20 buf += written;
21 len -= written;
23 else if (!written) {
24 close(ifd);
25 return error("copy-fd: write returned 0");
26 } else {
27 int write_error = errno;
28 close(ifd);
29 return error("copy-fd: write returned %s",
30 strerror(write_error));
34 close(ifd);
35 return 0;
38 int copy_file(const char *dst, const char *src, int mode)
40 int fdi, fdo, status;
42 mode = (mode & 0111) ? 0777 : 0666;
43 if ((fdi = open(src, O_RDONLY)) < 0)
44 return fdi;
45 if ((fdo = open(dst, O_WRONLY | O_CREAT | O_EXCL, mode)) < 0) {
46 close(fdi);
47 return fdo;
49 status = copy_fd(fdi, fdo);
50 if (close(fdo) != 0)
51 return error("%s: close error: %s", dst, strerror(errno));
53 if (!status && adjust_shared_perm(dst))
54 return -1;
56 return status;