Revision 4397c6535ea314b3412d6a0658ecf44241d07df1 authored by Sebastian Schuberth on 11 January 2012, 09:20:14 UTC, committed by Junio C Hamano on 12 January 2012, 02:02:55 UTC
For details, see the commit message of 4114156ae9. Note that while using $PWD as part of GIT_DIR is not required here, it does no harm and it is more consistent. In addition, on MSYS using an environment variable should be slightly faster than spawning an external executable. Signed-off-by: Sebastian Schuberth <sschuberth@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
1 parent be4d292
copy.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;
}
static int copy_times(const char *dst, const char *src)
{
struct stat st;
struct utimbuf times;
if (stat(src, &st) < 0)
return -1;
times.actime = st.st_atime;
times.modtime = st.st_mtime;
if (utime(dst, ×) < 0)
return -1;
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;
}
int copy_file_with_time(const char *dst, const char *src, int mode)
{
int status = copy_file(dst, src, mode);
if (!status)
return copy_times(dst, src);
return status;
}
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