diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/getgroups.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/getgroups.c | 38 |
1 files changed, 32 insertions, 6 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/getgroups.c b/sysdeps/unix/sysv/linux/i386/getgroups.c index 5484f72f1c..b538f8f79a 100644 --- a/sysdeps/unix/sysv/linux/i386/getgroups.c +++ b/sysdeps/unix/sysv/linux/i386/getgroups.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 @@ -23,17 +23,25 @@ #include <sysdep.h> #include <sys/syscall.h> - #include <linux/posix_types.h> +#include <kernel-features.h> + + +extern int __syscall_getgroups(int, __kernel_gid_t *); -extern int __syscall_getgroups __P ((int, __kernel_gid_t *)); +#ifdef __NR_getgroups32 +extern int __syscall_getgroups32 (int, __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_getgroups32 */ /* For Linux we must convert the array of groups from the format that the kernel returns. */ int -__getgroups (n, groups) - int n; - gid_t *groups; +__getgroups (int n, gid_t *groups) { if (n < 0) { @@ -42,8 +50,25 @@ __getgroups (n, groups) } else { +#if __ASSUME_32BITUIDS > 0 + return INLINE_SYSCALL (getgroups32, 2, n, groups); +#else int i, ngids; __kernel_gid_t kernel_groups[n = MIN (n, __sysconf (_SC_NGROUPS_MAX))]; +# ifdef __NR_getgroups32 + if (!__libc_missing_32bit_uids) + { + int result; + int saved_errno = errno; + + result = INLINE_SYSCALL (getgroups32, 2, n, groups); + if (result == 0 || errno != ENOSYS) + return result; + + __set_errno (saved_errno); + __libc_missing_32bit_uids = 1; + } +# endif /* __NR_getgroups32 */ ngids = INLINE_SYSCALL (getgroups, 2, n, kernel_groups); if (n != 0 && ngids > 0) @@ -52,6 +77,7 @@ __getgroups (n, groups) return ngids; } +#endif } weak_alias (__getgroups, getgroups) |