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files: use lseek instead of open

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Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
This commit is contained in:
Andrey Vagin 2012-01-10 20:02:00 +04:00 • committed by Cyrill Gorcunov
parent 14e42bb704
commit bda3baa373
1 changed files with 12 additions and 10 deletions
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22
files.c
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@ -491,22 +491,26 @@ static int open_fdinfo(int pid, struct fdinfo_entry *fe, int *fdinfo_fd, int sta
int prepare_fds(int pid)
{
u32 type = 0, err = -11, ret;
u32 type = 0, err = -1, ret;
int fdinfo_fd;
int state;
off_t offset;
off_t offset, magic_offset;
struct fdinfo_entry fe;
int nr = 0;
pr_info("%d: Opening fdinfo-s\n", pid);
fdinfo_fd = open_image_ro(CR_FD_FDINFO, pid);
if (fdinfo_fd < 0) {
pr_perror("%d: Can't open pipes img\n", pid);
return -1;
}
magic_offset = lseek(fdinfo_fd, 0, SEEK_CUR);
for (state = 0; state < FD_STATE_MAX; state++) {
fdinfo_fd = open_image_ro(CR_FD_FDINFO, pid);
if (fdinfo_fd < 0) {
pr_perror("%d: Can't open pipes img\n", pid);
return -1;
}
lseek(fdinfo_fd, magic_offset, SEEK_SET);
while (1) {
ret = read(fdinfo_fd, &fe, sizeof(fe));
@ -540,10 +544,8 @@ int prepare_fds(int pid)
lseek(fdinfo_fd, offset + fe.len, SEEK_SET);
}
close(fdinfo_fd);
}
return 0;
err = 0;
err:
close(fdinfo_fd);
return err;