diff options
| -rw-r--r-- | Makefile.am | 4 | ||||
| -rw-r--r-- | src/sysfs.c | 79 |
2 files changed, 82 insertions, 1 deletions
diff --git a/Makefile.am b/Makefile.am index 69c10c7..efe1a92 100644 --- a/Makefile.am +++ b/Makefile.am @@ -32,6 +32,8 @@ sbin_PROGRAMS += src/dump sbin_PROGRAMS += src/my_delete sbin_PROGRAMS += src/my_set sbin_PROGRAMS += src/check_tmpl +sbin_PROGRAMS += src/sysfs + src_priority_SOURCES = src/priority.c src_my_commit2_SOURCES = src/commit2.c src_exe_action_SOURCES = src/exe_action.c @@ -39,6 +41,7 @@ src_dump_SOURCES = src/dump_session.c src_my_delete_SOURCES = src/delete.c src_my_set_SOURCES = src/set.c src_check_tmpl_SOURCES = src/check_tmpl.c +src_sysfs = src/sysfs.c sbin_SCRIPTS = scripts/vyatta-cfg-cmd-wrapper sbin_SCRIPTS += scripts/vyatta-validate-type.pl @@ -77,4 +80,3 @@ install-exec-hook: mkdir -p $(DESTDIR)$(etc_shell_leveldir) cd etc/shell/level; $(cpiop) $(DESTDIR)$(etc_shell_leveldir) cd $(DESTDIR)/opt/vyatta/sbin; ln -s my_commit2 my_commit - diff --git a/src/sysfs.c b/src/sysfs.c new file mode 100644 index 0000000..a84cea4 --- /dev/null +++ b/src/sysfs.c @@ -0,0 +1,79 @@ +/* + * Program to set sysfs value - similar to sysctl commmand + */ + +#include <stdio.h> +#include <limits.h> +#include <stdlib.h> +#include <errno.h> +#include <string.h> + +#define SYS "/sys" + +static void get(const char *name) +{ + char path[PATH_MAX]; + char buf[BUFSIZ]; + FILE *f; + + snprintf(path, PATH_MAX, SYS "/%s", name); + f = fopen(path, "r"); + if (f == NULL) { + fprintf(stderr, "%s : %s\n", path, strerror(errno)); + exit(1); + } + + while (fgets(buf, BUFSIZ, f) != NULL) + fputs(buf, stdout); + + if (ferror(f)) { + fprintf(stderr, "%s : read %s\n", path, strerror(errno)); + exit(1); + } + fclose(f); +} + +static void set(const char *name, const char *val) +{ + FILE *f; + char path[PATH_MAX]; + + snprintf(path, PATH_MAX, SYS "/%s", name); + f = fopen(path, "w"); + if (f == NULL) { + fprintf(stderr, "%s : %s\n", path, strerror(errno)); + exit(1); + } + + fprintf(f, "%s\n", val); + fflush(f); + + if (ferror(f)) { + fprintf(stderr, "%s : read %s\n", path, strerror(errno)); + exit(1); + } + fclose(f); +} + +int main(int argc, char **argv) +{ + if (argc == 1) { + fprintf(stderr, "Usage: %s variable\n", argv[0]); + fprintf(stderr, " %s variable=value\n", argv[0]); + return 1; + } + + while (--argc) { + char *ep, *arg = *++argv; + + ep = strchr(arg, '='); + if (!ep) + get(arg); + else { + *ep++ = '\0'; + set(arg, ep); + } + } + + return 0; +} |