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Diffstat (limited to 'libcap-ng-0.7/docs/capng_lock.3')
| -rw-r--r-- | libcap-ng-0.7/docs/capng_lock.3 | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/libcap-ng-0.7/docs/capng_lock.3 b/libcap-ng-0.7/docs/capng_lock.3 new file mode 100644 index 0000000..7683119 --- /dev/null +++ b/libcap-ng-0.7/docs/capng_lock.3 @@ -0,0 +1,25 @@ +.TH "CAPNG_LOCK" "3" "June 2009" "Red Hat" "Libcap-ng API" +.SH NAME +capng_lock \- lock the current process capabilities settings +.SH "SYNOPSIS" +.B #include <cap-ng.h> +.sp +int capng_lock(void); + +.SH "DESCRIPTION" + +capng_lock will take steps to prevent children of the current process to regain full privileges if the uid is 0. This should be called while possessing the CAP_SETPCAP capability in the kernel. This function will do the following if permitted by the kernel: Set the NOROOT option on for PR_SET_SECUREBITS, set the NOROOT_LOCKED option to on for PR_SET_SECUREBITS, set the PR_NO_SETUID_FIXUP option on for PR_SET_SECUREBITS, and set the PR_NO_SETUID_FIXUP_LOCKED option on for PR_SET_SECUREBITS. + + +.SH "RETURN VALUE" + +This returns 0 on success and a negative number on failure. -1 means a failure setting any of the PR_SET_SECUREBITS options. + +.SH "SEE ALSO" + +.BR capng_apply (3), +.BR prctl (2), +.BR capabilities (7) + +.SH AUTHOR +Steve Grubb |