diff options
author | Luke Shumaker <lukeshu@sbcglobal.net> | 2016-07-28 00:07:27 -0400 |
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committer | Luke Shumaker <lukeshu@sbcglobal.net> | 2016-07-28 00:07:27 -0400 |
commit | aee084841b875167d9afd4984208fb9a95f89896 (patch) | |
tree | b02cbee0fc22f3da12ac692c3b40175dff8d39d0 /src/libshared/src/sysctl-util.c | |
parent | 458554a48c62b7885a9347bb7103922f3b1f69e3 (diff) | |
parent | 942c1849c01195eacf45f2183981718311f6b470 (diff) |
Merge branch 'lukeshu/postmove' into lukeshu/master
# Conflicts:
# src/libshared/Makefile
Diffstat (limited to 'src/libshared/src/sysctl-util.c')
-rw-r--r-- | src/libshared/src/sysctl-util.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/src/libshared/src/sysctl-util.c b/src/libshared/src/sysctl-util.c new file mode 100644 index 0000000000..b84502376d --- /dev/null +++ b/src/libshared/src/sysctl-util.c @@ -0,0 +1,73 @@ +/*** + This file is part of systemd. + + Copyright 2010 Lennart Poettering + + systemd 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. + + systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>. +***/ + +#include <stdio.h> +#include <string.h> + +#include "basic/fileio.h" +#include "basic/log.h" +#include "basic/macro.h" +#include "basic/string-util.h" +#include "sysctl-util.h" + +char *sysctl_normalize(char *s) { + char *n; + + n = strpbrk(s, "/."); + /* If the first separator is a slash, the path is + * assumed to be normalized and slashes remain slashes + * and dots remains dots. */ + if (!n || *n == '/') + return s; + + /* Otherwise, dots become slashes and slashes become + * dots. Fun. */ + while (n) { + if (*n == '.') + *n = '/'; + else + *n = '.'; + + n = strpbrk(n + 1, "/."); + } + + return s; +} + +int sysctl_write(const char *property, const char *value) { + char *p; + + assert(property); + assert(value); + + log_debug("Setting '%s' to '%s'", property, value); + + p = strjoina("/proc/sys/", property); + return write_string_file(p, value, 0); +} + +int sysctl_read(const char *property, char **content) { + char *p; + + assert(property); + assert(content); + + p = strjoina("/proc/sys/", property); + return read_full_file(p, content, NULL); +} |