SETGROUPS(2) BSD System Calls Manual SETGROUPS(2)NAME
setgroups -- set group access list
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <sys/param.h>
#include <unistd.h>
int
setgroups(int ngroups, const gid_t *gidset);
DESCRIPTION
The setgroups() system call sets the group access list of the current user process according to the array gidset. The ngroups argument indi-
cates the number of entries in the array and must be no more than {NGROUPS_MAX}+1.
Only the super-user may set a new group list.
RETURN VALUES
The setgroups() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indi-
cate the error.
ERRORS
The setgroups() system call will fail if:
[EPERM] The caller is not the super-user.
[EINVAL] The number specified in the ngroups argument is larger than the {NGROUPS_MAX}+1 limit.
[EFAULT] The address specified for gidset is outside the process address space.
SEE ALSO getgroups(2), initgroups(3)HISTORY
The setgroups() system call appeared in 4.2BSD.
BSD April 16, 1994 BSD
Check Out this Related Man Page
setgroups(2) System Calls Manual setgroups(2)NAME
setgroups - set group access list
SYNOPSIS DESCRIPTION
sets the group access list of the current user process according to the array gidset. The parameter ngroups indicates the number of
entries in the array and must be no more than
Only a user with the privilege can set new groups by adding to the group access list of the current user process; any user can delete
groups from it.
Security Restrictions
Some or all of the actions associated with this system call require the privilege. Processes owned by the superuser have this privilege.
Processes owned by other users may have this privilege, depending on system configuration. See privileges(5) for more information about
privileged access on systems that support fine-grained privileges.
RETURN VALUE
Upon successful completion, returns 0; otherwise it returns -1 and sets to indicate the error.
ERRORS
fails if any of the following conditions are encountered:
The caller is not a user with the privilege and has attempted to set new groups.
The address specified for
gidset is outside the process address space. The reliable detection of this error is implementation dependent.
ngroups is greater than or not positive.
An entry in gidset is not a valid group ID.
AUTHOR
was developed by the University of California, Berkeley.
SEE ALSO getgroups(2), initgroups(3C), privileges(5).
STANDARDS CONFORMANCE setgroups(2)
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