Revision f305016f428db71df44d3e0072e937a8739b4e1a authored by Junio C Hamano on 04 June 2017, 01:21:02 UTC, committed by Junio C Hamano on 04 June 2017, 01:21:02 UTC
"pack-objects" can stream a slice of an existing packfile out when the pack bitmap can tell that the reachable objects are all needed in the output, without inspecting individual objects. This strategy however would not work well when "--local" and other options are in use, and need to be disabled. * jk/disable-pack-reuse-when-broken: t5310: fix "; do" style pack-objects: disable pack reuse for object-selection options
copy.c
#include "cache.h"
int copy_fd(int ifd, int ofd)
{
while (1) {
char buffer[8192];
ssize_t len = xread(ifd, buffer, sizeof(buffer));
if (!len)
break;
if (len < 0)
return COPY_READ_ERROR;
if (write_in_full(ofd, buffer, len) < 0)
return COPY_WRITE_ERROR;
}
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);
switch (status) {
case COPY_READ_ERROR:
error_errno("copy-fd: read returned");
break;
case COPY_WRITE_ERROR:
error_errno("copy-fd: write returned");
break;
}
close(fdi);
if (close(fdo) != 0)
return error_errno("%s: close error", dst);
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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