GNU/Linux man pages
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GNU/Linux |
CentOS 5.6 |
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cap_get_flag(3) |
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cap_clear, cap_get_flag, cap_set_flag − capability data object manipulation
#include <sys/capability.h>
int cap_clear(cap_t cap_p);
int cap_get_flag(cap_t cap_p, cap_value_t cap, cap_flag_t flag, cap_flag_value_t *value_p);
int cap_set_flag(cap_t cap_p, cap_flag_t flag, int ncap, cap_value_t *caps, cap_flag_value_t value);
cc ... -lcap
cap_clear initializes the capability state in working storage identified by cap_p in such a way that all capability flags are cleared.
cap_get_flag obtains the current value of the capability flag, flag, of the capability, cap, from the capability state identified by cap_p and places it in the location pointed to by value_p.
cap_set_flag sets the flag, flag, of each capability in the array caps in the capability state identified by cap_p to value. The argument, ncap, is used to specify the number of capabilities in the array, caps.
A cap_value_t can identify any capability, such as CAP_CHOWN. A cap_flag_t can be set to CAP_EFFECTIVE, CAP_INHERITABLE or CAP_PERMITTED. A cap_flag_value_t can be CAP_CLEAR (0) or CAP_SET (1).
cap_clear, cap_get_flag and cap_set_flag return zero on success, and −1 on failure.
On failure, errno(3) is set to EINVAL, indicating that one of the arguments is invalid.
These functions are specified by POSIX.1e.
cap_copy_ext(3), cap_from_text(3), cap_get_file(3), cap_get_proc(3), cap_init(3)
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cap_get_flag(3) | |