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initgroups(3) [freebsd man page]

INITGROUPS(3)						   BSD Library Functions Manual 					     INITGROUPS(3)

NAME
initgroups -- initialize group access list LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <unistd.h> int initgroups(const char *name, gid_t basegid); DESCRIPTION
The initgroups() function uses the getgrouplist(3) function to calculate the group access list for the user specified in name. This group list is then setup for the current process using setgroups(2). The basegid is automatically included in the groups list. Typically this value is given as the group number from the password file. RETURN VALUES
The initgroups() 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 initgroups() function may fail and set errno for any of the errors specified for the library function setgroups(2). It may also return: [ENOMEM] The initgroups() function was unable to allocate temporary storage. SEE ALSO
setgroups(2), getgrouplist(3) HISTORY
The initgroups() function appeared in 4.2BSD. BSD
October 26, 2014 BSD

Check Out this Related Man Page

INITGROUPS(3)						   BSD Library Functions Manual 					     INITGROUPS(3)

NAME
initgroups -- initialize group access list LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <unistd.h> int initgroups(const char *name, int basegid); DESCRIPTION
The initgroups() function uses the getgrouplist(3) function to calculate the group access list for the user specified in name. This group list is then setup for the current process using setgroups(2). The basegid is automatically included in the groups list. Typically this value is given as the group number from the password file. RETURN VALUES
The initgroups() function returns -1 if it was not invoked by the super-user. SEE ALSO
setgroups(2), getgrouplist(3) HISTORY
The initgroups() function appeared in 4.2BSD. BUGS
The getgrouplist() function called by initgroups() uses the routines based on getgrent(3). If the invoking program uses any of these rou- tines, the group structure will be overwritten in the call to initgroups(). BSD
June 4, 1993 BSD

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