diff options
Diffstat (limited to 'posix')
| -rw-r--r-- | posix/Makefile | 2 | ||||
| -rw-r--r-- | posix/bits/unistd.h | 78 | ||||
| -rw-r--r-- | posix/unistd.h | 1 |
3 files changed, 80 insertions, 1 deletions
diff --git a/posix/Makefile b/posix/Makefile index 929ea47790..f79d079320 100644 --- a/posix/Makefile +++ b/posix/Makefile @@ -28,7 +28,7 @@ headers := sys/utsname.h sys/times.h sys/wait.h sys/types.h unistd.h \ bits/local_lim.h tar.h bits/utsname.h bits/confname.h \ bits/waitflags.h bits/waitstatus.h sys/unistd.h sched.h \ bits/sched.h re_comp.h wait.h bits/environments.h cpio.h \ - sys/sysmacros.h spawn.h + sys/sysmacros.h spawn.h bits/unistd.h distribute := confstr.h TESTS TESTS2C.sed testcases.h \ PTESTS PTESTS2C.sed ptestcases.h \ diff --git a/posix/bits/unistd.h b/posix/bits/unistd.h new file mode 100644 index 0000000000..3b9c67cb31 --- /dev/null +++ b/posix/bits/unistd.h @@ -0,0 +1,78 @@ +/* Checking macros for unistd functions. + Copyright (C) 2005 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 + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _UNISTD_H +# error "Never include <bits/unistd.h> directly; use <unistd.h> instead." +#endif + +extern ssize_t __read_chk (int __fd, void *__buf, size_t __nbytes, + size_t __buflen) __wur; +#define read(fd, buf, nbytes) \ + (__bos (buf) != (size_t) -1 \ + ? __read_chk (fd, buf, nbytes, __bos (buf)) \ + : read (fd, buf, nbytes)) + +#ifdef __USE_UNIX98 +extern ssize_t __pread_chk (int __fd, void *__buf, size_t __nbytes, + __off_t __offset, size_t __bufsize) __wur; +extern ssize_t __pread64_chk (int __fd, void *__buf, size_t __nbytes, + __off64_t __offset, size_t __bufsize) __wur; +# ifndef __USE_FILE_OFFSET64 +# define pread(fd, buf, nbytes, offset) \ + (__bos (buf) != (size_t) -1 \ + ? __pread64_chk (fd, buf, nbytes, offset, __bos (buf)) \ + : pread (fd, buf, offset, nbytes)) +# else +# define pread(fd, buf, nbytes, offset) \ + (__bos (buf) != (size_t) -1 \ + ? __pread_chk (fd, buf, nbytes, offset, __bos (buf)) \ + : pread (fd, buf, offset, nbytes)) +# endif + +# ifdef __USE_LARGEFILE64 +# define pread64(fd, buf, nbytes, offset) \ + (__bos (buf) != (size_t) -1 \ + ? __pread64_chk (fd, buf, nbytes, offset, __bos (buf)) \ + : pread64 (fd, buf, offset, nbytes)) +# endif +#endif + +#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K +extern int __readlink_chk (__const char *__restrict __path, + char *__restrict __buf, size_t __len, + size_t __buflen) + __THROW __nonnull ((1, 2)) __wur; +# define readlink(path, buf, len) \ + (__bos (buf) != (size_t) -1 \ + ? __readlink_chk (path, buf, len, __bos (buf)) \ + : readlink (path, buf, len)) +#endif + +extern char *__getcwd_chk (char *__buf, size_t __size, size_t __buflen) + __THROW __wur; +#define getcwd(buf, size) \ + (__bos (buf) != (size_t) -1 \ + ? __getcwd_chk (buf, size, buflen) : getcwd (buf, size)) + +#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED +extern char *__getwd_chk (char *__buf, size_t buflen) + __THROW __nonnull ((1)) __attribute_deprecated__ __wur; +#define getwd(buf) \ + (__bos (buf) != (size_t) -1 ? __getwd_chk (buf, buflen) : getwd (buf)) +#endif diff --git a/posix/unistd.h b/posix/unistd.h index 97e28fc70b..d6cd152b46 100644 --- a/posix/unistd.h +++ b/posix/unistd.h @@ -1046,6 +1046,7 @@ extern void swab (__const void *__restrict __from, void *__restrict __to, extern char *ctermid (char *__s) __THROW __nonnull ((1)); #endif + /* Define some macros helping to catch buffer overflows. */ #if __USE_FORTIFY_LEVEL > 0 && !defined __cplusplus # include <bits/unistd.h> |