diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/setgroups.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/setgroups.c | 37 |
1 files changed, 31 insertions, 6 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/setgroups.c b/sysdeps/unix/sysv/linux/i386/setgroups.c index e57004f8ac..7c750acc74 100644 --- a/sysdeps/unix/sysv/linux/i386/setgroups.c +++ b/sysdeps/unix/sysv/linux/i386/setgroups.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1997, 1998 Free Software Foundation, Inc. +/* Copyright (C) 1997, 1998, 2000 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -23,18 +23,26 @@ #include <sysdep.h> #include <sys/syscall.h> - #include <linux/posix_types.h> +#include "kernel-features.h" + + +extern int __syscall_setgroups (int, const __kernel_gid_t *); -extern int __syscall_setgroups __P ((int, const __kernel_gid_t *)); +#ifdef __NR_setgroups32 +extern int __syscall_setgroups32 __P ((int, const __kernel_gid32_t *)); +# if __ASSUME_32BITUIDS == 0 +/* This variable is shared with all files that need to check for 32bit + uids. */ +extern int __libc_missing_32bit_uids; +# endif +#endif /* __NR_setgroups32 */ /* Set the group set for the current user to GROUPS (N of them). For Linux we must convert the array of groups into the format that the kernel expects. */ int -setgroups (n, groups) - size_t n; - const gid_t *groups; +setgroups (size_t n, const gid_t *groups) { if (n > (size_t) __sysconf (_SC_NGROUPS_MAX)) { @@ -43,9 +51,25 @@ setgroups (n, groups) } else { +#if __ASSUME_32BITUIDS > 0 + return INLINE_SYSCALL (setgroups32, 2, n, groups); +#else size_t i; __kernel_gid_t kernel_groups[n]; +# ifdef __NR_setgroups32 + if (!__libc_missing_32bit_uids) + { + int result; + int saved_errno = errno; + + result = INLINE_SYSCALL (setgroups32, 2, n, groups); + if (result == 0 || errno != ENOSYS) + return result; + __set_errno (saved_errno); + __libc_missing_32bit_uids = 1; + } +# endif /* __NR_setgroups32 */ for (i = 0; i < n; i++) { kernel_groups[i] = groups[i]; @@ -58,4 +82,5 @@ setgroups (n, groups) return INLINE_SYSCALL (setgroups, 2, n, kernel_groups); } +#endif } |