2 * Copyright (c) 1989 - 1994, Julianne Frances Haugh
3 * Copyright (c) 1996 - 1998, Marek Michałkiewicz
4 * Copyright (c) 2003 - 2005, Tomasz Kłoczko
5 * Copyright (c) 2008 - 2009, Nicolas François
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9 * modification, are permitted provided that the following conditions
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20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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34 * Separated from setup.c. --marekm
44 #include "prototypes.h"
50 * setup_groups - set the group credentials
51 * set the group ID to the value from the password file entry
52 * set the supplementary group IDs
54 * In case of PAM enabled configurations, this shall be called before
57 * Returns 0 on success, or -1 on failure.
59 int setup_groups (const struct passwd *info)
62 * Set the real group ID to the primary group ID in the password
65 if (setgid (info->pw_gid) == -1) {
68 SYSLOG ((LOG_ERR, "bad group ID `%d' for user `%s': %s\n",
69 info->pw_gid, info->pw_name, strerror (err)));
73 #ifdef HAVE_INITGROUPS
75 * For systems which support multiple concurrent groups, go get
76 * the group set from the /etc/group file.
78 if (initgroups (info->pw_name, info->pw_gid) == -1) {
80 perror ("initgroups");
81 SYSLOG ((LOG_ERR, "initgroups failed for user `%s': %s\n",
82 info->pw_name, strerror (err)));
91 * change_uid - Set the real UID
93 * Returns 0 on success, or -1 on failure.
95 int change_uid (const struct passwd *info)
98 * Set the real UID to the UID value in the password file.
100 if (setuid (info->pw_uid) != 0) {
103 SYSLOG ((LOG_ERR, "bad user ID `%d' for user `%s': %s\n",
104 (int) info->pw_uid, info->pw_name, strerror (err)));
112 * setup_uid_gid() performs the following steps -
114 * set the group ID to the value from the password file entry
115 * set the supplementary group IDs
116 * optionally call specified function which may add more groups
117 * set the user ID to the value from the password file entry
119 * Returns 0 on success, or -1 on failure.
122 #if defined (HAVE_INITGROUPS) && ! (defined USE_PAM)
123 int setup_uid_gid (const struct passwd *info, bool is_console)
125 int setup_uid_gid (const struct passwd *info)
128 if (setup_groups (info) < 0) {
132 #if defined (HAVE_INITGROUPS) && ! defined (USE_PAM)
134 char *cp = getdef_str ("CONSOLE_GROUPS");
136 if ((NULL != cp) && (add_groups (cp) != 0)) {
137 perror ("Warning: add_groups");
140 #endif /* HAVE_INITGROUPS && !USE_PAM*/
142 if (change_uid (info) < 0) {