diff options
Diffstat (limited to 'shared/systemd/src/basic/util.c')
| -rw-r--r-- | shared/systemd/src/basic/util.c | 277 |
1 files changed, 0 insertions, 277 deletions
diff --git a/shared/systemd/src/basic/util.c b/shared/systemd/src/basic/util.c deleted file mode 100644 index 10a5bcff..00000000 --- a/shared/systemd/src/basic/util.c +++ /dev/null @@ -1,277 +0,0 @@ -/* SPDX-License-Identifier: LGPL-2.1-or-later */ - -#include "nm-sd-adapt-shared.h" - -#include <errno.h> -#include <fcntl.h> -#include <sys/mman.h> - -#include "alloc-util.h" -#include "build.h" -#include "dirent-util.h" -#include "env-file.h" -#include "env-util.h" -#include "fd-util.h" -#include "fileio.h" -#include "hostname-util.h" -#include "log.h" -#include "macro.h" -#include "parse-util.h" -#include "stat-util.h" -#include "string-util.h" -#include "util.h" -#include "virt.h" - -#if 0 /* NM_IGNORED */ -int saved_argc = 0; -char **saved_argv = NULL; -static int saved_in_initrd = -1; - -bool kexec_loaded(void) { - _cleanup_free_ char *s = NULL; - - if (read_one_line_file("/sys/kernel/kexec_loaded", &s) < 0) - return false; - - return s[0] == '1'; -} - -int prot_from_flags(int flags) { - - switch (flags & O_ACCMODE) { - - case O_RDONLY: - return PROT_READ; - - case O_WRONLY: - return PROT_WRITE; - - case O_RDWR: - return PROT_READ|PROT_WRITE; - - default: - return -EINVAL; - } -} - -bool in_initrd(void) { - struct statfs s; - int r; - - if (saved_in_initrd >= 0) - return saved_in_initrd; - - /* We make two checks here: - * - * 1. the flag file /etc/initrd-release must exist - * 2. the root file system must be a memory file system - * - * The second check is extra paranoia, since misdetecting an - * initrd can have bad consequences due the initrd - * emptying when transititioning to the main systemd. - */ - - r = getenv_bool_secure("SYSTEMD_IN_INITRD"); - if (r < 0 && r != -ENXIO) - log_debug_errno(r, "Failed to parse $SYSTEMD_IN_INITRD, ignoring: %m"); - - if (r >= 0) - saved_in_initrd = r > 0; - else - saved_in_initrd = access("/etc/initrd-release", F_OK) >= 0 && - statfs("/", &s) >= 0 && - is_temporary_fs(&s); - - return saved_in_initrd; -} - -void in_initrd_force(bool value) { - saved_in_initrd = value; -} - -int on_ac_power(void) { - bool found_offline = false, found_online = false; - _cleanup_closedir_ DIR *d = NULL; - struct dirent *de; - - d = opendir("/sys/class/power_supply"); - if (!d) - return errno == ENOENT ? true : -errno; - - FOREACH_DIRENT(de, d, return -errno) { - _cleanup_close_ int fd = -1, device = -1; - char contents[6]; - ssize_t n; - - device = openat(dirfd(d), de->d_name, O_DIRECTORY|O_RDONLY|O_CLOEXEC|O_NOCTTY); - if (device < 0) { - if (IN_SET(errno, ENOENT, ENOTDIR)) - continue; - - return -errno; - } - - fd = openat(device, "type", O_RDONLY|O_CLOEXEC|O_NOCTTY); - if (fd < 0) { - if (errno == ENOENT) - continue; - - return -errno; - } - - n = read(fd, contents, sizeof(contents)); - if (n < 0) - return -errno; - - if (n != 6 || memcmp(contents, "Mains\n", 6)) - continue; - - safe_close(fd); - fd = openat(device, "online", O_RDONLY|O_CLOEXEC|O_NOCTTY); - if (fd < 0) { - if (errno == ENOENT) - continue; - - return -errno; - } - - n = read(fd, contents, sizeof(contents)); - if (n < 0) - return -errno; - - if (n != 2 || contents[1] != '\n') - return -EIO; - - if (contents[0] == '1') { - found_online = true; - break; - } else if (contents[0] == '0') - found_offline = true; - else - return -EIO; - } - - return found_online || !found_offline; -} - -int container_get_leader(const char *machine, pid_t *pid) { - _cleanup_free_ char *s = NULL, *class = NULL; - const char *p; - pid_t leader; - int r; - - assert(machine); - assert(pid); - - if (streq(machine, ".host")) { - *pid = 1; - return 0; - } - - if (!hostname_is_valid(machine, 0)) - return -EINVAL; - - p = strjoina("/run/systemd/machines/", machine); - r = parse_env_file(NULL, p, - "LEADER", &s, - "CLASS", &class); - if (r == -ENOENT) - return -EHOSTDOWN; - if (r < 0) - return r; - if (!s) - return -EIO; - - if (!streq_ptr(class, "container")) - return -EIO; - - r = parse_pid(s, &leader); - if (r < 0) - return r; - if (leader <= 1) - return -EIO; - - *pid = leader; - return 0; -} - -int version(void) { - printf("systemd " STRINGIFY(PROJECT_VERSION) " (" GIT_VERSION ")\n%s\n", - systemd_features); - return 0; -} - -/* This is a direct translation of str_verscmp from boot.c */ -static bool is_digit(int c) { - return c >= '0' && c <= '9'; -} - -static int c_order(int c) { - if (c == 0 || is_digit(c)) - return 0; - - if ((c >= 'a') && (c <= 'z')) - return c; - - return c + 0x10000; -} - -int str_verscmp(const char *s1, const char *s2) { - const char *os1, *os2; - - assert(s1); - assert(s2); - - os1 = s1; - os2 = s2; - - while (*s1 || *s2) { - int first; - - while ((*s1 && !is_digit(*s1)) || (*s2 && !is_digit(*s2))) { - int order; - - order = c_order(*s1) - c_order(*s2); - if (order != 0) - return order; - s1++; - s2++; - } - - while (*s1 == '0') - s1++; - while (*s2 == '0') - s2++; - - first = 0; - while (is_digit(*s1) && is_digit(*s2)) { - if (first == 0) - first = *s1 - *s2; - s1++; - s2++; - } - - if (is_digit(*s1)) - return 1; - if (is_digit(*s2)) - return -1; - - if (first != 0) - return first; - } - - return strcmp(os1, os2); -} - -/* Turn off core dumps but only if we're running outside of a container. */ -void disable_coredumps(void) { - int r; - - if (detect_container() > 0) - return; - - r = write_string_file("/proc/sys/kernel/core_pattern", "|/bin/false", WRITE_STRING_FILE_DISABLE_BUFFER); - if (r < 0) - log_debug_errno(r, "Failed to turn off coredumps, ignoring: %m"); -} -#endif /* NM_IGNORED */ |