acl_equiv_mode (3) - Linux Man Pages
acl_equiv_mode: check for an equivalent ACL
acl_equiv_mode - check for an equivalent ACL
LIBRARYLinux Access Control Lists library (libacl, -lacl).
SYNOPSISIn sys/types.h In acl/libacl.h Ft int Fn acl_equiv_mode acl_t acl mode_t *mode_p
DESCRIPTIONThe Fn acl_equiv_mode function checks if the ACL pointed to by the argument acl contains only the required ACL entries of tag types ACL_USER_OBJ, ACL_GROUP_OBJ, and ACL_OTHER, and contains no permissions other that ACL_READ, ACL_WRITE or ACL_EXECUTE. If the ACL has this form, it can can be fully represented with the traditional file permission bits, and is considered equivalent with the traditional file permission bits.
RETURN VALUEOn success, this function returns the value 0 if acl is an equivalent ACL, and the value 1 if acl is not an equivalent ACL. On error, the value -1 is returned, and errno is set appropriately.
ERRORSIf any of the following conditions occur, the Fn acl_equiv_mode function returns the value -1 and sets errno to the corresponding value:
- Bq Er EINVAL
- The argument acl is not a valid pointer to an ACL.
STANDARDSThis is a non-portable, Linux specific extension to the ACL manipulation functions defined in IEEE Std 1003.1e draft 17 ("POSIX.1e", abandoned).
AUTHORWritten by An Andreas Gruenbacher Aq a.gruenbacher [at] bestbits.at .