if HAVE_STATIC_LIBCAP
sbin_PROGRAMS += init.lxc.static
-init_lxc_static_SOURCES = lxc_init.c error.c log.c initutils.c caps.c \
- tools/arguments.c
+init_lxc_static_SOURCES = lxc_init.c error.c log.c initutils.c caps.c
if !HAVE_GETLINE
if HAVE_FGETLN
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include <sys/prctl.h>
+
#include "initutils.h"
#include "log.h"
errno = saved_errno;
return ret;
}
+
+/*
+ * Sets the process title to the specified title. Note that this may fail if
+ * the kernel doesn't support PR_SET_MM_MAP (kernels <3.18).
+ */
+int setproctitle(char *title)
+{
+ static char *proctitle = NULL;
+ char buf[2048], *tmp;
+ FILE *f;
+ int i, len, ret = 0;
+
+ /* We don't really need to know all of this stuff, but unfortunately
+ * PR_SET_MM_MAP requires us to set it all at once, so we have to
+ * figure it out anyway.
+ */
+ unsigned long start_data, end_data, start_brk, start_code, end_code,
+ start_stack, arg_start, arg_end, env_start, env_end,
+ brk_val;
+ struct prctl_mm_map prctl_map;
+
+ f = fopen_cloexec("/proc/self/stat", "r");
+ if (!f) {
+ return -1;
+ }
+
+ tmp = fgets(buf, sizeof(buf), f);
+ fclose(f);
+ if (!tmp) {
+ return -1;
+ }
+
+ /* Skip the first 25 fields, column 26-28 are start_code, end_code,
+ * and start_stack */
+ tmp = strchr(buf, ' ');
+ for (i = 0; i < 24; i++) {
+ if (!tmp)
+ return -1;
+ tmp = strchr(tmp+1, ' ');
+ }
+ if (!tmp)
+ return -1;
+
+ i = sscanf(tmp, "%lu %lu %lu", &start_code, &end_code, &start_stack);
+ if (i != 3)
+ return -1;
+
+ /* Skip the next 19 fields, column 45-51 are start_data to arg_end */
+ for (i = 0; i < 19; i++) {
+ if (!tmp)
+ return -1;
+ tmp = strchr(tmp+1, ' ');
+ }
+
+ if (!tmp)
+ return -1;
+
+ i = sscanf(tmp, "%lu %lu %lu %*u %*u %lu %lu",
+ &start_data,
+ &end_data,
+ &start_brk,
+ &env_start,
+ &env_end);
+ if (i != 5)
+ return -1;
+
+ /* Include the null byte here, because in the calculations below we
+ * want to have room for it. */
+ len = strlen(title) + 1;
+
+ proctitle = realloc(proctitle, len);
+ if (!proctitle)
+ return -1;
+
+ arg_start = (unsigned long) proctitle;
+ arg_end = arg_start + len;
+
+ brk_val = syscall(__NR_brk, 0);
+
+ prctl_map = (struct prctl_mm_map) {
+ .start_code = start_code,
+ .end_code = end_code,
+ .start_stack = start_stack,
+ .start_data = start_data,
+ .end_data = end_data,
+ .start_brk = start_brk,
+ .brk = brk_val,
+ .arg_start = arg_start,
+ .arg_end = arg_end,
+ .env_start = env_start,
+ .env_end = env_end,
+ .auxv = NULL,
+ .auxv_size = 0,
+ .exe_fd = -1,
+ };
+
+ ret = prctl(PR_SET_MM, PR_SET_MM_MAP, (long) &prctl_map, sizeof(prctl_map), 0);
+ if (ret == 0)
+ strcpy((char*)arg_start, title);
+ else
+ INFO("setting cmdline failed - %s", strerror(errno));
+
+ return ret;
+}
#define __LXC_INITUTILS_H
#include <errno.h>
-#include <stdio.h>
+#include <fcntl.h>
+#include <inttypes.h>
#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/mount.h>
#include <sys/stat.h>
#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/mount.h>
-#include <unistd.h>
-#include <string.h>
-#include <stdlib.h>
-#include <fcntl.h>
-
#include "config.h"
#define DEFAULT_ZFSROOT "lxc"
#define DEFAULT_RBDPOOL "lxc"
+#ifndef PR_SET_MM
+#define PR_SET_MM 35
+#endif
+
+#ifndef PR_SET_MM_MAP
+#define PR_SET_MM_MAP 14
+
+struct prctl_mm_map {
+ uint64_t start_code;
+ uint64_t end_code;
+ uint64_t start_data;
+ uint64_t end_data;
+ uint64_t start_brk;
+ uint64_t brk;
+ uint64_t start_stack;
+ uint64_t arg_start;
+ uint64_t arg_end;
+ uint64_t env_start;
+ uint64_t env_end;
+ uint64_t *auxv;
+ uint32_t auxv_size;
+ uint32_t exe_fd;
+};
+#endif
+
extern void lxc_setup_fs(void);
extern const char *lxc_global_config_value(const char *option_name);
/* open a file with O_CLOEXEC */
extern void remove_trailing_slashes(char *p);
-FILE *fopen_cloexec(const char *path, const char *mode);
+extern FILE *fopen_cloexec(const char *path, const char *mode);
+extern int setproctitle(char *title);
#endif /* __LXC_INITUTILS_H */
#include <lxc/lxccontainer.h>
#include "log.h"
-#include "arguments.h"
#include "error.h"
#include "initutils.h"
#include "confile.h"
#include "console.h"
#include "criu.h"
+#include "initutils.h"
#include "log.h"
#include "lxc.h"
#include "lxccontainer.h"
#include "parse.h"
#include "utils.h"
-#ifndef PR_SET_MM
-#define PR_SET_MM 35
-#endif
-
-#ifndef PR_SET_MM_MAP
-#define PR_SET_MM_MAP 14
-
-struct prctl_mm_map {
- uint64_t start_code;
- uint64_t end_code;
- uint64_t start_data;
- uint64_t end_data;
- uint64_t start_brk;
- uint64_t brk;
- uint64_t start_stack;
- uint64_t arg_start;
- uint64_t arg_end;
- uint64_t env_start;
- uint64_t env_end;
- uint64_t *auxv;
- uint32_t auxv_size;
- uint32_t exe_fd;
-};
-#endif
-
#ifndef O_PATH
#define O_PATH 010000000
#endif
return tpath;
}
-/*
- * Sets the process title to the specified title. Note that this may fail if
- * the kernel doesn't support PR_SET_MM_MAP (kernels <3.18).
- */
-int setproctitle(char *title)
-{
- static char *proctitle = NULL;
- char buf[2048], *tmp;
- FILE *f;
- int i, len, ret = 0;
-
- /* We don't really need to know all of this stuff, but unfortunately
- * PR_SET_MM_MAP requires us to set it all at once, so we have to
- * figure it out anyway.
- */
- unsigned long start_data, end_data, start_brk, start_code, end_code,
- start_stack, arg_start, arg_end, env_start, env_end,
- brk_val;
- struct prctl_mm_map prctl_map;
-
- f = fopen_cloexec("/proc/self/stat", "r");
- if (!f) {
- return -1;
- }
-
- tmp = fgets(buf, sizeof(buf), f);
- fclose(f);
- if (!tmp) {
- return -1;
- }
-
- /* Skip the first 25 fields, column 26-28 are start_code, end_code,
- * and start_stack */
- tmp = strchr(buf, ' ');
- for (i = 0; i < 24; i++) {
- if (!tmp)
- return -1;
- tmp = strchr(tmp+1, ' ');
- }
- if (!tmp)
- return -1;
-
- i = sscanf(tmp, "%lu %lu %lu", &start_code, &end_code, &start_stack);
- if (i != 3)
- return -1;
-
- /* Skip the next 19 fields, column 45-51 are start_data to arg_end */
- for (i = 0; i < 19; i++) {
- if (!tmp)
- return -1;
- tmp = strchr(tmp+1, ' ');
- }
-
- if (!tmp)
- return -1;
-
- i = sscanf(tmp, "%lu %lu %lu %*u %*u %lu %lu",
- &start_data,
- &end_data,
- &start_brk,
- &env_start,
- &env_end);
- if (i != 5)
- return -1;
-
- /* Include the null byte here, because in the calculations below we
- * want to have room for it. */
- len = strlen(title) + 1;
-
- proctitle = realloc(proctitle, len);
- if (!proctitle)
- return -1;
-
- arg_start = (unsigned long) proctitle;
- arg_end = arg_start + len;
-
- brk_val = syscall(__NR_brk, 0);
-
- prctl_map = (struct prctl_mm_map) {
- .start_code = start_code,
- .end_code = end_code,
- .start_stack = start_stack,
- .start_data = start_data,
- .end_data = end_data,
- .start_brk = start_brk,
- .brk = brk_val,
- .arg_start = arg_start,
- .arg_end = arg_end,
- .env_start = env_start,
- .env_end = env_end,
- .auxv = NULL,
- .auxv_size = 0,
- .exe_fd = -1,
- };
-
- ret = prctl(PR_SET_MM, PR_SET_MM_MAP, (long) &prctl_map, sizeof(prctl_map), 0);
- if (ret == 0)
- strcpy((char*)arg_start, title);
- else
- INFO("setting cmdline failed - %s", strerror(errno));
-
- return ret;
-}
-
/*
* @path: a pathname where / replaced with '\0'.
* @offsetp: pointer to int showing which path segment was last seen.
bool switch_to_ns(pid_t pid, const char *ns);
int is_dir(const char *path);
char *get_template_path(const char *t);
-int setproctitle(char *title);
int safe_mount(const char *src, const char *dest, const char *fstype,
unsigned long flags, const void *data, const char *rootfs);
int lxc_mount_proc_if_needed(const char *rootfs);
projects / thirdparty / lxc.git / commitdiff
