PR_CAP_AMBIENT_LOWER - lower the ambient capability set of the calling thread

The capability specified in cap is removed from the ambient capability set.

EINVALcap does not specify a valid capability.

Linux 4.3.

Standard C library (libc, -lc)

PR_CAP_AMBIENT_LOWER - lower the ambient capability set of the calling thread

On success, 0 is returned. 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_LOWER(2const)

Linux.

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

See PR_CAP_AMBIENT(2const).