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Set ping_group_range so ping works #2

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Set ping_group_range so ping works #2

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11 changes: 11 additions & 0 deletions netns-exec.c
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,7 @@
#include <errno.h>
#include <string.h>
#include <stdbool.h>
#include <fcntl.h>

#include "namespace.h"

Expand Down Expand Up @@ -108,6 +109,16 @@ int main(int argc, char *argv[])
return EXIT_OTHER_ERROR;


// allow non-root user to use the ping command
int fd = open("/proc/sys/net/ipv4/ping_group_range", O_WRONLY);
if (fd == -1) {
fprintf(stderr, "Error setting ping_group_range: %s\n", strerror(errno));
usage(argv0, true);
}
dprintf(fd, "0 2147483647\n");
close(fd);


drop_root_privileges();


Expand Down