ACL_VALID - Online Linux Manual PageSection : 3
Updated : March 23, 2002
Operating system : Linux ACL

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NAME acl_valid —validate an ACL

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LIBRARYLinux Access Control Lists library (libacl, −lacl).

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SYNOPSIS #include <sys/types.h>
#include <sys/acl.h>
int acl_valid(acl_t acl);

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DESCRIPTIONThe acl_valid() function checks the ACL referred to by the argument acl for validity. The three required entries ACL_USER_OBJ, ACL_GROUP_OBJ, and ACL_OTHER must exist exactly once in the ACL. If the ACL contains any ACL_USER or ACL_GROUP entries, then an ACL_MASK entry is also required. The ACL may contain at most one ACL_MASK entry. The user identifiers must be unique among all entries of type ACL_USER. The group identifiers must be unique among all entries of type ACL_GROUP.

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RETURN VALUE
The acl_valid() functions return the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate the error.

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ERRORSIf any of the following conditions occur, the acl_valid() function returns -1 and sets errno to the corresponding value: [EINVAL] The argument acl is not a valid pointer to an ACL. The argument acl does not point to a valid ACL. One or more of the required ACL entries is not present in acl. The ACL contains entries that are not unique.

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STANDARDSIEEE Std 1003.1e draft 17 (‟POSIX.1e”, abandoned)

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SEE ALSOacl_check(3), acl_set_file(3), acl(5)

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AUTHORDerived from the FreeBSD manual pages written by Robert N M Watson ⟨rwatson@FreeBSD.org⟩, and adapted for Linux by Andreas Gruenbacher ⟨andreas.gruenbacher@gmail.com⟩. 0

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