/* * sysctl - sysctl set/get helpers * Subject to the GPL, version 2. */ #include #include #include #include #include #include #include "built_in.h" #include "sysctl.h" int sysctl_set_int(const char *file, int value) { char path[PATH_MAX]; char str[64]; ssize_t ret; int fd; strncpy(path, SYSCTL_PROC_PATH, PATH_MAX); strncat(path, file, PATH_MAX - sizeof(SYSCTL_PROC_PATH) - 1); fd = open(path, O_WRONLY); if (unlikely(fd < 0)) return -1; ret = snprintf(str, 63, "%d", value); if (ret < 0) { close(fd); return -1; } ret = write(fd, str, strlen(str)); close(fd); return ret <= 0 ? -1 : 0; } int sysctl_get_int(const char *file, int *value) { char path[PATH_MAX]; char str[64]; ssize_t ret; int fd; strncpy(path, SYSCTL_PROC_PATH, PATH_MAX); strncat(path, file, PATH_MAX - sizeof(SYSCTL_PROC_PATH) - 1); fd = open(path, O_RDONLY); if (fd < 0) return -1; ret = read(fd, str, sizeof(str)); if (ret > 0) { *value = atoi(str); ret = 0; } else { ret = -1; } close(fd); return ret; } lue='master'>master net-next plumbingsTobias Klauser

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