Mercurial > gnulib
view lib/fsusage.h @ 37246:5cfb3a67238d
regex: avoid glibc deadlock during configure
glibc has a known bug where certain corruptions of the heap can
cause malloc to default to printing a debug message that includes
a backtrace, but the act of getting the backtrace uses dlopen
which in turn calls into malloc, causing a recursive lock ending
in deadlock. Thus, when configure is probing for a known glibc
heap corruption bug, the overall configure would hang.
The solution suggested by glibc developers is to force malloc
to quit printing debug messages, which avoids recursive malloc.
* m4/regex.m4 (gl_REGEX): Avoid recursive malloc deadlock when
glibc bug 15078 in turn triggers bug 16159.
Reported by Michal Privoznik.
Signed-off-by: Eric Blake <eblake@redhat.com>
author | Eric Blake <eblake@redhat.com> |
---|---|
date | Tue, 03 Dec 2013 10:34:13 -0700 |
parents | c741bc27922a |
children | 344018b6e5d7 |
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/* fsusage.h -- declarations for file system space usage info Copyright (C) 1991-1992, 1997, 2003-2006, 2009-2013 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ /* Space usage statistics for a file system. Blocks are 512-byte. */ #if !defined FSUSAGE_H_ # define FSUSAGE_H_ # include <stdint.h> # include <stdbool.h> struct fs_usage { uintmax_t fsu_blocksize; /* Size of a block. */ uintmax_t fsu_blocks; /* Total blocks. */ uintmax_t fsu_bfree; /* Free blocks available to superuser. */ uintmax_t fsu_bavail; /* Free blocks available to non-superuser. */ bool fsu_bavail_top_bit_set; /* 1 if fsu_bavail represents a value < 0. */ uintmax_t fsu_files; /* Total file nodes. */ uintmax_t fsu_ffree; /* Free file nodes. */ }; int get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp); #endif