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utils.c: Add lxc_wait_for_pid_status routine that returns exit code

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Signed-off-by: Christian Seiler <christian@iwakd.de>
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
This commit is contained in:
Christian Seiler 2013-05-20 17:54:21 +02:00 committed by Serge Hallyn
parent 71b9b8ed26
commit c797a220d5
2 changed files with 19 additions and 0 deletions
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16
src/lxc/utils.c
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@ -265,3 +265,19 @@ again:
return -1;
return 0;
}
int lxc_wait_for_pid_status(pid_t pid)
{
int status, ret;
again:
ret = waitpid(pid, &status, 0);
if (ret == -1) {
if (errno == EINTR)
goto again;
return -1;
}
if (ret != pid)
goto again;
return status;
}

3
src/lxc/utils.h
View File

@ -23,6 +23,8 @@
#ifndef _utils_h
#define _utils_h
#include <sys/types.h>
extern int lxc_setup_fs(void);
extern int get_u16(unsigned short *val, const char *arg, int base);
extern int mkdir_p(const char *dir, mode_t mode);
@ -64,5 +66,6 @@ extern int __build_bug_on_failed;
* wait on a child we forked
*/
extern int wait_for_pid(pid_t pid);
extern int lxc_wait_for_pid_status(pid_t pid);
#endif