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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:54:37 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:54:37 +0000 |
| commit | 97c26c1924b076ef23ebe4381558e8aa025712b2 (patch) | |
| tree | 109724175f07436696f51b14b5abbd3f4d704d6d /libmisc/pwd_init.c | |
| parent | Initial commit. (diff) | |
| download | shadow-97c26c1924b076ef23ebe4381558e8aa025712b2.tar.xz shadow-97c26c1924b076ef23ebe4381558e8aa025712b2.zip | |
Adding upstream version 1:4.13+dfsg1.upstream/1%4.13+dfsg1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'libmisc/pwd_init.c')
| -rw-r--r-- | libmisc/pwd_init.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/libmisc/pwd_init.c b/libmisc/pwd_init.c new file mode 100644 index 0000000..63c71e2 --- /dev/null +++ b/libmisc/pwd_init.c @@ -0,0 +1,79 @@ +/* + * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh + * SPDX-FileCopyrightText: 1997 , Marek Michałkiewicz + * SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko + * SPDX-FileCopyrightText: 2008 , Nicolas François + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <config.h> + +#ident "$Id$" + +#include "defines.h" +#include <signal.h> +#include <sys/types.h> +#include <sys/stat.h> +#ifdef HAVE_SYS_RESOURCE_H +#include <sys/resource.h> +#endif + +#include "prototypes.h" + +/* + * pwd_init - ignore signals, and set resource limits to safe + * values. Call this before modifying password files, so that + * it is less likely to fail in the middle of operation. + */ +void pwd_init (void) +{ +#ifdef HAVE_SYS_RESOURCE_H + struct rlimit rlim; + +#ifdef RLIMIT_CORE + rlim.rlim_cur = rlim.rlim_max = 0; + setrlimit (RLIMIT_CORE, &rlim); +#endif + rlim.rlim_cur = rlim.rlim_max = RLIM_INFINITY; +#ifdef RLIMIT_AS + setrlimit (RLIMIT_AS, &rlim); +#endif +#ifdef RLIMIT_CPU + setrlimit (RLIMIT_CPU, &rlim); +#endif +#ifdef RLIMIT_DATA + setrlimit (RLIMIT_DATA, &rlim); +#endif +#ifdef RLIMIT_FSIZE + setrlimit (RLIMIT_FSIZE, &rlim); +#endif +#ifdef RLIMIT_NOFILE + setrlimit (RLIMIT_NOFILE, &rlim); +#endif +#ifdef RLIMIT_RSS + setrlimit (RLIMIT_RSS, &rlim); +#endif +#ifdef RLIMIT_STACK + setrlimit (RLIMIT_STACK, &rlim); +#endif +#else /* !HAVE_SYS_RESOURCE_H */ + set_filesize_limit (30000); + /* don't know how to set the other limits... */ +#endif /* !HAVE_SYS_RESOURCE_H */ + + signal (SIGALRM, SIG_IGN); + signal (SIGHUP, SIG_IGN); + signal (SIGINT, SIG_IGN); + signal (SIGPIPE, SIG_IGN); + signal (SIGQUIT, SIG_IGN); + signal (SIGTERM, SIG_IGN); +#ifdef SIGTSTP + signal (SIGTSTP, SIG_IGN); +#endif +#ifdef SIGTTOU + signal (SIGTTOU, SIG_IGN); +#endif + + umask (077); +} |