Browse Source
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>maint


3 changed files with 30 additions and 0 deletions
@ -0,0 +1,18 @@ |
|||||||
|
#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; |
||||||
|
} |
Loading…
Reference in new issue