diff options
author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
---|---|---|
committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /REORG.TODO/sysdeps/posix/ulimit.c | |
parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
download | glibc-zack/build-layout-experiment.tar.gz glibc-zack/build-layout-experiment.tar.xz glibc-zack/build-layout-experiment.zip |
Prepare for radical source tree reorganization. zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage directory, REORG.TODO, except for files that will certainly still exist in their current form at top level when we're done (COPYING, COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which are moved to the new directory OldChangeLogs, instead), and the generated file INSTALL (which is just deleted; in the new order, there will be no generated files checked into version control).
Diffstat (limited to 'REORG.TODO/sysdeps/posix/ulimit.c')
-rw-r--r-- | REORG.TODO/sysdeps/posix/ulimit.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/posix/ulimit.c b/REORG.TODO/sysdeps/posix/ulimit.c new file mode 100644 index 0000000000..2ae34758e2 --- /dev/null +++ b/REORG.TODO/sysdeps/posix/ulimit.c @@ -0,0 +1,92 @@ +/* Copyright (C) 1991-2017 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, see + <http://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <stdarg.h> +#include <sysdep.h> +#include <ulimit.h> +#include <unistd.h> +#include <limits.h> +#include <sys/resource.h> + +/* Function depends on CMD: + 1 = Return the limit on the size of a file, in units of 512 bytes. + 2 = Set the limit on the size of a file to NEWLIMIT. Only the + super-user can increase the limit. + 3 = illegal due to shared libraries; normally is + (Return the maximum possible address of the data segment.) + 4 = Return the maximum number of files that the calling process + can open. + Returns -1 on errors. */ +long int +__ulimit (int cmd, ...) +{ + struct rlimit limit; + va_list va; + long int result = -1; + + va_start (va, cmd); + + switch (cmd) + { + case UL_GETFSIZE: + /* Get limit on file size. */ + if (__getrlimit (RLIMIT_FSIZE, &limit) == 0) + /* Convert from bytes to 512 byte units. */ + result = (limit.rlim_cur == RLIM_INFINITY + ? LONG_MAX : limit.rlim_cur / 512); + break; + + case UL_SETFSIZE: + /* Set limit on file size. */ + { + long int newlimit = va_arg (va, long int); + long int newlen; + + if ((rlim_t) newlimit > RLIM_INFINITY / 512) + { + limit.rlim_cur = RLIM_INFINITY; + limit.rlim_max = RLIM_INFINITY; + newlen = LONG_MAX; + } + else + { + limit.rlim_cur = newlimit * 512; + limit.rlim_max = newlimit * 512; + newlen = newlimit; + } + + result = __setrlimit (RLIMIT_FSIZE, &limit); + if (result != -1) + result = newlen; + } + break; + + case __UL_GETOPENMAX: + result = __sysconf (_SC_OPEN_MAX); + break; + + default: + __set_errno (EINVAL); + } + + va_end (va); + + return result; +} + +weak_alias (__ulimit, ulimit); |