mirror of
https://github.com/git/git.git
synced 2024-11-24 02:17:02 +08:00
6900679c2f
Using cygwin with cygwin.dll before 1.5.22 the system call pread() is buggy. This patch introduces NO_PREAD. If NO_PREAD is set git uses a sequence of lseek()/xread()/lseek() to emulate pread. Signed-off-by: Stefan-W. Hahn <stefan.hahn@s-hahn.de> Signed-off-by: Junio C Hamano <junkio@cox.net>
19 lines
433 B
C
19 lines
433 B
C
#include "../git-compat-util.h"
|
|
|
|
ssize_t git_pread(int fd, void *buf, size_t count, off_t offset)
|
|
{
|
|
off_t current_offset;
|
|
ssize_t rc;
|
|
|
|
current_offset = lseek(fd, 0, SEEK_CUR);
|
|
|
|
if (lseek(fd, offset, SEEK_SET) < 0)
|
|
return -1;
|
|
|
|
rc = read_in_full(fd, buf, count);
|
|
|
|
if (current_offset != lseek(fd, current_offset, SEEK_SET))
|
|
return -1;
|
|
return rc;
|
|
}
|