mirror of
https://github.com/git/git.git
synced 2024-11-15 05:33:04 +01:00
8b1f6de854
Previously, the errno could have been lost due to an intervening close() call. This patch also contains minor cosmetic changes. Signed-off-by: Ariel Badichi <abadichi@bezeqint.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
57 lines
1.1 KiB
C
57 lines
1.1 KiB
C
#include "cache.h"
|
|
|
|
int copy_fd(int ifd, int ofd)
|
|
{
|
|
while (1) {
|
|
char buffer[8192];
|
|
char *buf = buffer;
|
|
ssize_t len = xread(ifd, buffer, sizeof(buffer));
|
|
if (!len)
|
|
break;
|
|
if (len < 0) {
|
|
int read_error = errno;
|
|
close(ifd);
|
|
return error("copy-fd: read returned %s",
|
|
strerror(read_error));
|
|
}
|
|
while (len) {
|
|
int written = xwrite(ofd, buf, len);
|
|
if (written > 0) {
|
|
buf += written;
|
|
len -= written;
|
|
}
|
|
else if (!written) {
|
|
close(ifd);
|
|
return error("copy-fd: write returned 0");
|
|
} else {
|
|
int write_error = errno;
|
|
close(ifd);
|
|
return error("copy-fd: write returned %s",
|
|
strerror(write_error));
|
|
}
|
|
}
|
|
}
|
|
close(ifd);
|
|
return 0;
|
|
}
|
|
|
|
int copy_file(const char *dst, const char *src, int mode)
|
|
{
|
|
int fdi, fdo, status;
|
|
|
|
mode = (mode & 0111) ? 0777 : 0666;
|
|
if ((fdi = open(src, O_RDONLY)) < 0)
|
|
return fdi;
|
|
if ((fdo = open(dst, O_WRONLY | O_CREAT | O_EXCL, mode)) < 0) {
|
|
close(fdi);
|
|
return fdo;
|
|
}
|
|
status = copy_fd(fdi, fdo);
|
|
if (close(fdo) != 0)
|
|
return error("%s: close error: %s", dst, strerror(errno));
|
|
|
|
if (!status && adjust_shared_perm(dst))
|
|
return -1;
|
|
|
|
return status;
|
|
}
|