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#include <sys/capsicum.h>
The rights argument can be inspected using cap_rights_init(3) family of functions.
The complete list of the capability rights can be found in the rights(4) manual page.
cap_rights_t setrights, getrights; int fd;memset(&setrights, 0, sizeof(setrights)); memset(&getrights, 0, sizeof(getrights));
fd = open("/tmp/foo", O_RDONLY); if (fd < 0) err(1, "open() failed");
cap_rights_init(&setrights, CAP_FSTAT, CAP_READ); if (cap_rights_limit(fd, &setrights) < 0 && errno != ENOSYS) err(1, "cap_rights_limit() failed");
if (cap_rights_get(fd, &getrights) < 0 && errno != ENOSYS) err(1, "cap_rights_get() failed");
assert(memcmp(&setrights, &getrights, sizeof(setrights)) == 0);
[EBADF] | |
The fd argument is not a valid active descriptor. | |
[EFAULT] | |
The rights argument points at an invalid address. | |
CAP_RIGHTS_GET (3) | May 5, 2020 |
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