diff options
Diffstat (limited to 'src/core')
| -rw-r--r-- | src/core/condition.c | 208 |
1 files changed, 0 insertions, 208 deletions
diff --git a/src/core/condition.c b/src/core/condition.c index 32135ec5b2..d8d11528ec 100644 --- a/src/core/condition.c +++ b/src/core/condition.c @@ -19,216 +19,8 @@ along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ -#include <stdlib.h> -#include <errno.h> -#include <string.h> -#include <unistd.h> -#include <sys/capability.h> -#include <sys/statvfs.h> -#include <fnmatch.h> - -#include "sd-id128.h" -#include "util.h" #include "condition.h" -#include "virt.h" -#include "path-util.h" -#include "fileio.h" #include "unit.h" -#include "smack-util.h" -#include "apparmor-util.h" -#include "ima-util.h" -#include "selinux-util.h" -#include "audit.h" - -static int condition_test_security(Condition *c) { - assert(c); - assert(c->parameter); - assert(c->type == CONDITION_SECURITY); - - if (streq(c->parameter, "selinux")) - return mac_selinux_use() == !c->negate; - if (streq(c->parameter, "smack")) - return mac_smack_use() == !c->negate; - if (streq(c->parameter, "apparmor")) - return mac_apparmor_use() == !c->negate; - if (streq(c->parameter, "audit")) - return use_audit() == !c->negate; - if (streq(c->parameter, "ima")) - return use_ima() == !c->negate; - - return c->negate; -} - -static int condition_test_capability(Condition *c) { - _cleanup_fclose_ FILE *f = NULL; - cap_value_t value; - char line[LINE_MAX]; - unsigned long long capabilities = -1; - - assert(c); - assert(c->parameter); - assert(c->type == CONDITION_CAPABILITY); - - /* If it's an invalid capability, we don't have it */ - - if (cap_from_name(c->parameter, &value) < 0) - return -EINVAL; - - /* If it's a valid capability we default to assume - * that we have it */ - - f = fopen("/proc/self/status", "re"); - if (!f) - return -errno; - - while (fgets(line, sizeof(line), f)) { - truncate_nl(line); - - if (startswith(line, "CapBnd:")) { - (void) sscanf(line+7, "%llx", &capabilities); - break; - } - } - - return !!(capabilities & (1ULL << value)) == !c->negate; -} - -static bool condition_test_needs_update(Condition *c) { - const char *p; - struct stat usr, other; - - assert(c); - assert(c->parameter); - assert(c->type == CONDITION_NEEDS_UPDATE); - - /* If the file system is read-only we shouldn't suggest an update */ - if (path_is_read_only_fs(c->parameter) > 0) - return c->negate; - - /* Any other failure means we should allow the condition to be true, - * so that we rather invoke too many update tools then too - * few. */ - - if (!path_is_absolute(c->parameter)) - return !c->negate; - - p = strappenda(c->parameter, "/.updated"); - if (lstat(p, &other) < 0) - return !c->negate; - - if (lstat("/usr/", &usr) < 0) - return !c->negate; - - return (usr.st_mtim.tv_sec > other.st_mtim.tv_sec || - (usr.st_mtim.tv_sec == other.st_mtim.tv_sec && usr.st_mtim.tv_nsec > other.st_mtim.tv_nsec)) == !c->negate; -} - -static bool condition_test_first_boot(Condition *c) { - int r; - - assert(c); - assert(c->parameter); - assert(c->type == CONDITION_FIRST_BOOT); - - r = parse_boolean(c->parameter); - if (r < 0) - return r; - - return ((access("/run/systemd/first-boot", F_OK) >= 0) == !!r) == !c->negate; -} - -static int condition_test(Condition *c) { - assert(c); - - switch(c->type) { - - case CONDITION_PATH_EXISTS: - return (access(c->parameter, F_OK) >= 0) == !c->negate; - - case CONDITION_PATH_EXISTS_GLOB: - return (glob_exists(c->parameter) > 0) == !c->negate; - - case CONDITION_PATH_IS_DIRECTORY: { - struct stat st; - - if (stat(c->parameter, &st) < 0) - return c->negate; - return S_ISDIR(st.st_mode) == !c->negate; - } - - case CONDITION_PATH_IS_SYMBOLIC_LINK: { - struct stat st; - - if (lstat(c->parameter, &st) < 0) - return c->negate; - return S_ISLNK(st.st_mode) == !c->negate; - } - - case CONDITION_PATH_IS_MOUNT_POINT: - return (path_is_mount_point(c->parameter, true) > 0) == !c->negate; - - case CONDITION_PATH_IS_READ_WRITE: - return (path_is_read_only_fs(c->parameter) > 0) == c->negate; - - case CONDITION_DIRECTORY_NOT_EMPTY: { - int k; - - k = dir_is_empty(c->parameter); - return !(k == -ENOENT || k > 0) == !c->negate; - } - - case CONDITION_FILE_NOT_EMPTY: { - struct stat st; - - if (stat(c->parameter, &st) < 0) - return c->negate; - - return (S_ISREG(st.st_mode) && st.st_size > 0) == !c->negate; - } - - case CONDITION_FILE_IS_EXECUTABLE: { - struct stat st; - - if (stat(c->parameter, &st) < 0) - return c->negate; - - return (S_ISREG(st.st_mode) && (st.st_mode & 0111)) == !c->negate; - } - - case CONDITION_KERNEL_COMMAND_LINE: - return condition_test_kernel_command_line(c); - - case CONDITION_VIRTUALIZATION: - return condition_test_virtualization(c); - - case CONDITION_SECURITY: - return condition_test_security(c); - - case CONDITION_CAPABILITY: - return condition_test_capability(c); - - case CONDITION_HOST: - return condition_test_host(c); - - case CONDITION_AC_POWER: - return condition_test_ac_power(c); - - case CONDITION_ARCHITECTURE: - return condition_test_architecture(c); - - case CONDITION_NEEDS_UPDATE: - return condition_test_needs_update(c); - - case CONDITION_FIRST_BOOT: - return condition_test_first_boot(c); - - case CONDITION_NULL: - return !c->negate; - - default: - assert_not_reached("Invalid condition type."); - } -} bool condition_test_list(const char *unit, Condition *first) { Condition *c; |