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Use the child subreaper option only when available 

Signed-off-by: Mrunal Patel <mrunalp@gmail.com> (github: mrunalp)
This commit is contained in:
Mrunal Patel 2015-01-06 18:30:30 -05:00
parent 8067e34ec0
commit a1ac9b1015
1 changed files with 2 additions and 4 deletions
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6
namespaces/nsenter/nsenter.c
View File

@ -15,10 +15,6 @@
#include <unistd.h>
#include <getopt.h>
#ifndef PR_SET_CHILD_SUBREAPER
#define PR_SET_CHILD_SUBREAPER 36
#endif
static const kBufSize = 256;
static const char *kNsEnter = "nsenter";
@ -93,11 +89,13 @@ void nsenter()
return;
}
#ifdef PR_SET_CHILD_SUBREAPER
if (prctl(PR_SET_CHILD_SUBREAPER, 1, 0, 0, 0) == -1) {
fprintf(stderr, "nsenter: failed to set child subreaper: %s",
strerror(errno));
exit(1);
}
#endif
static const struct option longopts[] = {
{"nspid", required_argument, NULL, 'n'},