Query: cap_rights_get
OS: freebsd
Section: 3
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
CAP_RIGHTS_GET(3) BSD Library Functions Manual CAP_RIGHTS_GET(3)NAMEcap_rights_get -- obtain capability rightsLIBRARYStandard C Library (libc, -lc)SYNOPSIS#include <sys/capsicum.h> int cap_rights_get(int fd, cap_rights_t *rights);DESCRIPTIONThe cap_rights_get function allows to obtain current capability rights for the given descriptor. The function will fill the rights argument with all capability rights if they were not limited or capability rights configured during the last successful call of cap_rights_limit(2) on the given descriptor. 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.RETURN VALUESUpon successful completion, the value 0 is returned; otherwise the value -1 is returned and the global variable errno is set to indicate the error.EXAMPLESThe following example demonstrates how to limit file descriptor capability rights and how to obtain them. 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);ERRORScap_rights_get() succeeds unless: [EBADF] The fd argument is not a valid active descriptor. [EFAULT] The rights argument points at an invalid address.SEE ALSOcap_rights_limit(2), errno(2), open(2), assert(3), cap_rights_init(3), err(3), memcmp(3), memset(3), capsicum(4), rights(4)HISTORYSupport for capabilities and capabilities mode was developed as part of the TrustedBSD Project.AUTHORSThis function was created by Pawel Jakub Dawidek <pawel@dawidek.net> under sponsorship of the FreeBSD Foundation.BSDMarch 27, 2014 BSD
Related Man Pages |
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cap_rights_get(3) - freebsd |
cap_fcntls_limit(2) - freebsd |
cap_rights_clear(3) - freebsd |
cap_rights_set(3) - freebsd |
cap_rights_remove(3) - freebsd |
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