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authorAshwini Sharma <ak.ashwini1981@gmail.com>2013-12-23 07:23:28 -0600
committerAshwini Sharma <ak.ashwini1981@gmail.com>2013-12-23 07:23:28 -0600
commit656d5043b8a1a746cf7c949ee695db6c6251dfea (patch)
treeaba5a8362321ebfc9aa1e6d336a96b9f4facfac2 /toys
parentfe69830eba96afc47fdcdf4ee8456f9ef95407f5 (diff)
downloadtoybox-656d5043b8a1a746cf7c949ee695db6c6251dfea.tar.gz
Attached is an implementation for groupdel.
This is aliased to delgroup, for a requirement at my end. Also lib/password.c is modified to along with.
Diffstat (limited to 'toys')
-rw-r--r--toys/pending/groupdel.c75
1 files changed, 75 insertions, 0 deletions
diff --git a/toys/pending/groupdel.c b/toys/pending/groupdel.c
new file mode 100644
index 00000000..dca59819
--- /dev/null
+++ b/toys/pending/groupdel.c
@@ -0,0 +1,75 @@
+/* groupdel.c - delete a group
+ *
+ * Copyright 2013 Ashwini Kumar <ak.ashwini1981@gmail.com>
+ * Copyright 2013 Kyungwan Han <asura321@gmail.com>
+ *
+ * See http://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/groupdel.html
+
+USE_GROUPDEL(NEWTOY(groupdel, "<1>2", TOYFLAG_NEEDROOT|TOYFLAG_SBIN))
+USE_GROUPDEL(OLDTOY(delgroup, groupdel, OPTSTR_groupdel, TOYFLAG_NEEDROOT|TOYFLAG_SBIN))
+
+config GROUPDEL
+ bool "groupdel"
+ default n
+ help
+ usage: delgroup [USER] GROUP
+ groupdel GROUP
+
+ Delete a group or delete a user from a group
+*/
+
+#define FOR_groupdel
+#include "toys.h"
+
+void groupdel_main(void)
+{
+ struct group *grp = NULL;
+ char *entry = NULL;
+
+ if (toys.optc == 2) { //del user from group
+ //toys.optargs[0]- user, toys.optargs[1] - group
+ if (!getpwnam(toys.optargs[0]))
+ error_exit("user '%s' does not exist", toys.optargs[0]);
+ if (!(grp = getgrnam(toys.optargs[1])))
+ error_exit("group '%s' does not exist", toys.optargs[1]);
+ if (!(grp = getgrnam(toys.optargs[1])))
+ error_exit("group '%s' does not exist", toys.optargs[1]);
+ if (!grp->gr_mem) return;
+ else {
+ int i, found = -1;
+
+ for (i = 0; grp->gr_mem[i] && (found == -1); i++)
+ if (!strcmp(grp->gr_mem[i], *toys.optargs)) found = i;
+
+ if (found == -1) {
+ xprintf("%s: The user '%s' is not a member of '%s'\n", toys.which->name,
+ toys.optargs[0], toys.optargs[1]);
+ return;
+ }
+ entry = xstrdup("");
+ for (i=0; grp->gr_mem[i]; i++) {
+ if (found != i) { //leave out user from grp member list
+ if (i && *entry) strcat(entry, ",");
+ entry = xrealloc(entry, strlen(entry) + strlen(grp->gr_mem[i]) + 2);
+ strcat(entry, grp->gr_mem[i]);
+ }
+ }
+ }
+ } else { //delete the group
+ struct passwd *pw = NULL;
+
+ if (!(grp = getgrnam(*toys.optargs)))
+ error_exit("group '%s' doesn't exist", *toys.optargs);
+ //is it a primary grp of user
+ while ((pw = getpwent())) {
+ if (pw->pw_gid == grp->gr_gid) {
+ endpwent();
+ error_exit("can't remove primary group of user '%s'", pw->pw_name);
+ }
+ }
+ endpwent();
+ }
+ update_password("/etc/group", grp->gr_name, entry);
+ update_password("/etc/gshadow", grp->gr_name, entry);
+ free(entry);
+}