#include <linux/prctl.h> /* Definition of PR_* constants */ #include <sys/prctl.h> int prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_RAISE, long cap, 0L, 0L);
LIBRARY
Standard C library (libc, -lc)
DESCRIPTION
The capability specified in cap is added to the ambient
capability set. The specified capability must already be present in both the
permitted and the inheritable sets of the process. This operation is not
permitted if the SECBIT_NO_CAP_AMBIENT_RAISE securebit is set.
RETURN VALUE
On success, 0 is returned. On error, -1 is returned, and
errno is set to indicate the error.
ERRORS
- EINVAL
- cap does not specify a valid capability.
- EPERM
- either the capability specified in cap is not present in the
process's permitted and inheritable capability sets, or the
PR_CAP_AMBIENT_LOWER securebit has been set.
VERSIONS
See PR_CAP_AMBIENT(2const).