diff options
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/posix/fpathconf.c | 5 | ||||
| -rw-r--r-- | sysdeps/posix/isatty.c | 11 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/getgroups.c | 30 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/setgroups.c | 28 |
4 files changed, 45 insertions, 29 deletions
diff --git a/sysdeps/posix/fpathconf.c b/sysdeps/posix/fpathconf.c index b73292bef0..94593bccca 100644 --- a/sysdeps/posix/fpathconf.c +++ b/sysdeps/posix/fpathconf.c @@ -72,9 +72,12 @@ __fpathconf (fd, name) { if (errno == ENOSYS) { - errno = save_errno; + __set_errno (save_errno); return NAME_MAX; } + else if (errno == ENODEV) + __set_errno (EINVAL); + return -1; } else diff --git a/sysdeps/posix/isatty.c b/sysdeps/posix/isatty.c index 41d16e400a..d7a14990cc 100644 --- a/sysdeps/posix/isatty.c +++ b/sysdeps/posix/isatty.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1991, 1995, 1996, 1997 Free Software Foundation, Inc. +/* Copyright (C) 1991, 1995, 1996, 1997, 1998 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 @@ -16,7 +16,6 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#include <errno.h> #include <unistd.h> #include <termios.h> @@ -25,15 +24,9 @@ int __isatty (fd) int fd; { - int save; - int is_tty; struct termios term; - save = errno; - is_tty = __tcgetattr (fd, &term) == 0; - __set_errno (save); - - return is_tty; + return __tcgetattr (fd, &term) == 0; } weak_alias (__isatty, isatty) diff --git a/sysdeps/unix/sysv/linux/i386/getgroups.c b/sysdeps/unix/sysv/linux/i386/getgroups.c index c306dd1268..5484f72f1c 100644 --- a/sysdeps/unix/sysv/linux/i386/getgroups.c +++ b/sysdeps/unix/sysv/linux/i386/getgroups.c @@ -17,10 +17,13 @@ Boston, MA 02111-1307, USA. */ #include <errno.h> -#include <sys/types.h> #include <unistd.h> +#include <sys/param.h> +#include <sys/types.h> #include <sysdep.h> +#include <sys/syscall.h> + #include <linux/posix_types.h> extern int __syscall_getgroups __P ((int, __kernel_gid_t *)); @@ -32,14 +35,23 @@ __getgroups (n, groups) int n; gid_t *groups; { - int i, ngids; - __kernel_gid_t kernel_groups[n]; - - ngids = INLINE_SYSCALL (getgroups, 2, n, kernel_groups); - if (n != 0 && ngids > 0) - for (i = 0; i < ngids; i++) - groups[i] = kernel_groups[i]; - return ngids; + if (n < 0) + { + __set_errno (EINVAL); + return -1; + } + else + { + int i, ngids; + __kernel_gid_t kernel_groups[n = MIN (n, __sysconf (_SC_NGROUPS_MAX))]; + + ngids = INLINE_SYSCALL (getgroups, 2, n, kernel_groups); + if (n != 0 && ngids > 0) + for (i = 0; i < ngids; i++) + groups[i] = kernel_groups[i]; + + return ngids; + } } weak_alias (__getgroups, getgroups) diff --git a/sysdeps/unix/sysv/linux/i386/setgroups.c b/sysdeps/unix/sysv/linux/i386/setgroups.c index ad2a6b5493..67197e6f06 100644 --- a/sysdeps/unix/sysv/linux/i386/setgroups.c +++ b/sysdeps/unix/sysv/linux/i386/setgroups.c @@ -36,18 +36,26 @@ setgroups (n, groups) size_t n; const gid_t *groups; { - size_t i; - __kernel_gid_t kernel_groups[n]; - - for (i = 0; i < n; i++) + if (n < 0 || n > __sysconf (_SC_NGROUPS_MAX)) + { + __set_errno (EINVAL); + return -1; + } + else if { - kernel_groups[i] = groups[i]; - if (groups[i] != (gid_t) ((__kernel_gid_t) groups[i])) + size_t i; + __kernel_gid_t kernel_groups[n]; + + for (i = 0; i < n; i++) { - __set_errno (EINVAL); - return -1; + kernel_groups[i] = groups[i]; + if (groups[i] != (gid_t) ((__kernel_gid_t) groups[i])) + { + __set_errno (EINVAL); + return -1; + } } - } - return INLINE_SYSCALL (setgroups, 2, n, kernel_groups); + return INLINE_SYSCALL (setgroups, 2, n, kernel_groups); + } } |