procps/lib/nsutils.c

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#include <errno.h>
#include <error.h>
#include <stdio_ext.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include "proc/readproc.h"
#include "nsutils.h"
#ifdef TEST_PROGRAM
const char *get_ns_name(int id)
{
return NULL;
}
#endif /* TEST_PROGRAM */
/* we need to fill in only namespace information */
int ns_read(pid_t pid, proc_t *ns_task)
{
struct stat st;
char buff[50];
int i, rc = 0;
for (i = 0; i < NUM_NS; i++) {
snprintf(buff, sizeof(buff), "/proc/%i/ns/%s", pid,
get_ns_name(i));
if (stat(buff, &st)) {
if (errno != ENOENT)
rc = errno;
ns_task->ns[i] = 0;
continue;
}
ns_task->ns[i] = st.st_ino;
}
return rc;
}
#ifdef TEST_PROGRAM
#include <stdio.h>
int main(int argc, char *argv[])
{
printf("Hello, World!\n");
return EXIT_SUCCESS;
}
#endif /* TEST_PROGRAM */