cleanup src/linux and src/misc trees, etc.

[musl] / src / misc / initgroups.c

diff --git a/src/misc/initgroups.c b/src/misc/initgroups.c
new file mode 100644 (file)
index 0000000..545d185
--- /dev/null
+++ b/src/misc/initgroups.c
@@ -0,0 +1,15 @@
+#include <sys/types.h>
+#include <unistd.h>
+#include <grp.h>
+#include <limits.h>
+
+int getgrouplist(const char *, gid_t, gid_t *, int *);
+int setgroups(size_t, const gid_t *);
+
+int initgroups(const char *user, gid_t gid)
+{
+       gid_t groups[NGROUPS_MAX];
+       int count = NGROUPS_MAX;
+       if (getgrouplist(user, gid, groups, &count) < 0) return -1;
+       return setgroups(count, groups);
+}