11a1589223
Files which are installed as-is (any .service and other unit files, .conf files, .policy files, etc), are left as is. My assumption is that SPDX identifiers are not yet that well known, so it's better to retain the extended header to avoid any doubt. I also kept any copyright lines. We can probably remove them, but it'd nice to obtain explicit acks from all involved authors before doing that.
77 lines
1.7 KiB
C
77 lines
1.7 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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***/
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "fd-util.h"
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#include "fileio.h"
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#include "log.h"
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#include "macro.h"
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#include "string-util.h"
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#include "sysctl-util.h"
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char *sysctl_normalize(char *s) {
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char *n;
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n = strpbrk(s, "/.");
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/* If the first separator is a slash, the path is
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* assumed to be normalized and slashes remain slashes
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* and dots remains dots. */
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if (!n || *n == '/')
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return s;
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/* Otherwise, dots become slashes and slashes become
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* dots. Fun. */
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while (n) {
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if (*n == '.')
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*n = '/';
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else
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*n = '.';
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n = strpbrk(n + 1, "/.");
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}
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return s;
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}
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int sysctl_write(const char *property, const char *value) {
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char *p;
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_cleanup_close_ int fd = -1;
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assert(property);
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assert(value);
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log_debug("Setting '%s' to '%s'", property, value);
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p = strjoina("/proc/sys/", property);
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fd = open(p, O_WRONLY|O_CLOEXEC);
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if (fd < 0)
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return -errno;
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if (!endswith(value, "\n"))
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value = strjoina(value, "\n");
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if (write(fd, value, strlen(value)) < 0)
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return -errno;
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return 0;
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}
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int sysctl_read(const char *property, char **content) {
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char *p;
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assert(property);
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assert(content);
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p = strjoina("/proc/sys/", property);
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return read_full_file(p, content, NULL);
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}
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