diff options
Diffstat (limited to 'stdlib')
| -rw-r--r-- | stdlib/Makefile | 2 | ||||
| -rw-r--r-- | stdlib/canonicalize.c | 50 | ||||
| -rw-r--r-- | stdlib/rand_r.c | 49 |
3 files changed, 81 insertions, 20 deletions
diff --git a/stdlib/Makefile b/stdlib/Makefile index 66f28ffe5c..9d5744fc78 100644 --- a/stdlib/Makefile +++ b/stdlib/Makefile @@ -32,7 +32,7 @@ routines := \ abs labs llabs \ div ldiv lldiv \ mblen mbstowcs mbtowc wcstombs wctomb \ - random random_r rand \ + random random_r rand rand_r \ drand48 erand48 lrand48 nrand48 mrand48 jrand48 \ srand48 seed48 lcong48 \ drand48_r erand48_r lrand48_r nrand48_r mrand48_r jrand48_r \ diff --git a/stdlib/canonicalize.c b/stdlib/canonicalize.c index 554e1b2cba..8c0074a11c 100644 --- a/stdlib/canonicalize.c +++ b/stdlib/canonicalize.c @@ -1,21 +1,21 @@ /* Return the canonical absolute name of a given file. -Copyright (C) 1996 Free Software Foundation, Inc. -This file is part of the GNU C Library. + Copyright (C) 1996 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 Library General Public License as -published by the Free Software Foundation; either version 2 of the -License, or (at your option) any later version. + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 -Library General Public License for more details. + 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 + Library General Public License for more details. -You should have received a copy of the GNU Library General Public -License along with the GNU C Library; see the file COPYING.LIB. If -not, write to the Free Software Foundation, Inc., 675 Mass Ave, -Cambridge, MA 02139, USA. */ + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ #include <assert.h> #include <stdlib.h> @@ -58,10 +58,22 @@ canonicalize (const char *name, char *resolved) if (!resolved) rpath = malloc (path_max); - strcpy (rpath, "/"); - if (name[0] != '/' && !getcwd (rpath, path_max)) - goto error; - dest = rpath + strlen (rpath); + if (name[0] != '/') + { + /* We don't write to RPATH directly since the application and + the library might disagree about the value for PATH_MAX. */ + char tmpbuf[path_max]; + + if (!getcwd (rpath, path_max)) + goto error; + + dest = __stpcpy (rpath, tmpbuf); + } + else + { + rpath[0] = '/'; + dest = rpath + 1; + } for (start = end = name; *start; start = end) { @@ -164,9 +176,9 @@ error: free (rpath); return NULL; } - weak_alias (canonicalize, realpath) + char * canonicalize_file_name (const char *name) { diff --git a/stdlib/rand_r.c b/stdlib/rand_r.c new file mode 100644 index 0000000000..3e0b8b2bc0 --- /dev/null +++ b/stdlib/rand_r.c @@ -0,0 +1,49 @@ +/* Reentrant random function frm POSIX.1c. + Copyright (C) 1996 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <stdlib.h> + + +/* This algorithm is mentioned in the ISO C standard, here extended + for 32 bits. */ +int +rand_r (unsigned int *seed) +{ + unsigned int next = *seed; + int result; + + next *= 1103515245; + next += 12345; + result = (unsigned int) (next / 65536) % 2048; + + next *= 1103515245; + next += 12345; + result <<= 11; + result ^= (unsigned int) (next / 65536) % 1024; + + next *= 1103515245; + next += 12345; + result <<= 10; + result ^= (unsigned int) (next / 65536) % 1024; + + *seed = next; + + return result; +} |