2 * Copyright (c) 1989 - 1994, Julianne Frances Haugh
3 * Copyright (c) 1996 - 1998, Marek Michałkiewicz
4 * Copyright (c) 2001 - 2006, Tomasz Kłoczko
5 * Copyright (c) 2007 - 2008, Nicolas François
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37 #include "prototypes.h"
48 * Add groups with names from LIST (separated by commas or colons)
49 * to the supplementary group set. Silently ignore groups which are
50 * already there. Warning: uses strtok().
52 int add_groups (const char *list)
54 GETGROUPS_T *grouplist, *tmp;
60 if (strlen (list) >= sizeof (buf)) {
68 grouplist = (gid_t *) malloc (i * sizeof (GETGROUPS_T));
71 ngroups = getgroups (i, grouplist);
74 /* not enough room, so try allocating a larger buffer */
84 for (token = strtok (buf, SEP); NULL != token; token = strtok (NULL, SEP)) {
87 grp = getgrnam (token); /* local, no need for xgetgrnam */
89 fprintf (stderr, _("Warning: unknown group %s\n"),
94 for (i = 0; i < ngroups && grouplist[i] != grp->gr_gid; i++);
99 if (ngroups >= sysconf (_SC_NGROUPS_MAX)) {
100 fputs (_("Warning: too many groups\n"), stderr);
103 tmp = (gid_t *) realloc (grouplist, (ngroups + 1) * sizeof (GETGROUPS_T));
108 tmp[ngroups++] = grp->gr_gid;
114 return setgroups (ngroups, grouplist);