PR_CAP_AMBIENT_IS_SET - read the ambient capability set of the calling thread

This call returns 1 if the capability in cap is in the ambient capability set and 0 if it is not.

EINVALcap does not specify a valid capability.

Linux 4.3.

Standard C library (libc, -lc)

PR_CAP_AMBIENT_IS_SET - read the ambient capability set of the calling thread

On success, this call returns the boolean value described above. On error, -1 is returned, and errno is set to indicate the error.

prctl(2), PR_CAP_AMBIENT(2const), libcap(3) Linux man-pages 6.9.1 2024-06-01 PR_CAP_AMBIENT_IS_SET(2const)

Linux.

#include<linux/prctl.h> /* Definition of PR_* constants */ #include<sys/prctl.h>intprctl(PR_CAP_AMBIENT,PR_CAP_AMBIENT_IS_SET,longcap,0L,0L);

See PR_CAP_AMBIENT(2const).