#include "log.h"
#include "util.h"
+#include "fileio.h"
#include "strv.h"
#include "macro.h"
#include "mkdir.h"
return 0;
}
+/* Joins /proc/[pid]/fd/ and /proc/[pid]/fdinfo/ into the following lines:
+ * 0:/dev/pts/23
+ * pos: 0
+ * flags: 0100002
+ *
+ * 1:/dev/pts/23
+ * pos: 0
+ * flags: 0100002
+ *
+ * 2:/dev/pts/23
+ * pos: 0
+ * flags: 0100002
+ * EOF
+ */
+static int compose_open_fds(pid_t pid, char **open_fds) {
+ _cleanup_fclose_ FILE *stream = NULL;
+ char path[PATH_MAX], line[LINE_MAX];
+ size_t ignored_size;
+ const char *fddelim = "";
+ struct dirent *dent = NULL;
+ _cleanup_closedir_ DIR *proc_fd_dir = NULL;
+ int r = 0;
+
+ assert(pid >= 0);
+ assert(open_fds != NULL);
+
+ sprintf(path, "/proc/"PID_FMT"/fd", pid);
+ proc_fd_dir = opendir(path);
+
+ if (proc_fd_dir == NULL)
+ return -ENOENT;
+
+ stream = open_memstream(open_fds, &ignored_size);
+ if (!stream)
+ return -ENOMEM;
+
+ for (dent = readdir(proc_fd_dir); dent != NULL; dent = readdir(proc_fd_dir)) {
+ _cleanup_free_ char *fdname = NULL;
+ _cleanup_fclose_ FILE *fdinfo = NULL;
+
+ if (dent->d_name[0] == '.' || strcmp(dent->d_name, "..") == 0)
+ continue;
+
+ /* Too long path is unlikely a path to valid file descriptor in /proc/[pid]/fd */
+ /* Skip it. */
+ r = snprintf(path, sizeof(path), "/proc/"PID_FMT"/fd/%s", pid, dent->d_name);
+ if (r >= (int)sizeof(path))
+ continue;
+
+ r = readlink_malloc(path, &fdname);
+ if (r < 0)
+ return r;
+
+ fprintf(stream, "%s%s:%s\n", fddelim, dent->d_name, fdname);
+ fddelim = "\n";
+
+ /* Use the directory entry from /proc/[pid]/fd with /proc/[pid]/fdinfo */
+
+ /* Too long path is unlikely a path to valid file descriptor info in /proc/[pid]/fdinfo */
+ /* Skip it. */
+ r = snprintf(path, sizeof(path), "/proc/"PID_FMT"/fdinfo/%s", pid, dent->d_name);
+ if (r >= (int)sizeof(path))
+ continue;
+
+ fdinfo = fopen(path, "re");
+ if (fdinfo == NULL)
+ continue;
+
+ while(fgets(line, sizeof(line), fdinfo) != NULL)
+ fprintf(stream, "%s%s",
+ line, strchr(line, '\n') == NULL ? "\n" : "");
+ }
+
+ return 0;
+}
+
int main(int argc, char* argv[]) {
_cleanup_free_ char *core_pid = NULL, *core_uid = NULL, *core_gid = NULL, *core_signal = NULL,
*core_timestamp = NULL, *core_comm = NULL, *core_exe = NULL, *core_unit = NULL,
*core_session = NULL, *core_message = NULL, *core_cmdline = NULL, *coredump_data = NULL,
- *core_slice = NULL, *core_cgroup = NULL, *core_owner_uid = NULL,
+ *core_slice = NULL, *core_cgroup = NULL, *core_owner_uid = NULL, *core_open_fds = NULL,
+ *core_proc_status = NULL, *core_proc_maps = NULL, *core_proc_limits = NULL, *core_proc_cgroup = NULL,
+ *core_cwd = NULL, *core_root = NULL, *core_environ = NULL,
*exe = NULL, *comm = NULL, *filename = NULL;
const char *info[_INFO_LEN];
_cleanup_close_ int coredump_fd = -1;
- struct iovec iovec[18];
+ struct iovec iovec[26];
off_t coredump_size;
int r, j = 0;
uid_t uid, owner_uid;
gid_t gid;
pid_t pid;
char *t;
+ const char *p;
/* Make sure we never enter a loop */
prctl(PR_SET_DUMPABLE, 0);
IOVEC_SET_STRING(iovec[j++], core_cgroup);
}
+ if (compose_open_fds(pid, &t) >= 0) {
+ core_open_fds = strappend("COREDUMP_OPEN_FDS=", t);
+ free(t);
+
+ if (core_open_fds)
+ IOVEC_SET_STRING(iovec[j++], core_open_fds);
+ }
+
+ p = procfs_file_alloca(pid, "status");
+ if (read_full_file(p, &t, NULL) >= 0) {
+ core_proc_status = strappend("COREDUMP_PROC_STATUS=", t);
+ free(t);
+
+ if (core_proc_status)
+ IOVEC_SET_STRING(iovec[j++], core_proc_status);
+ }
+
+ p = procfs_file_alloca(pid, "maps");
+ if (read_full_file(p, &t, NULL) >= 0) {
+ core_proc_maps = strappend("COREDUMP_PROC_MAPS=", t);
+ free(t);
+
+ if (core_proc_maps)
+ IOVEC_SET_STRING(iovec[j++], core_proc_maps);
+ }
+
+ p = procfs_file_alloca(pid, "limits");
+ if (read_full_file(p, &t, NULL) >= 0) {
+ core_proc_limits = strappend("COREDUMP_PROC_LIMITS=", t);
+ free(t);
+
+ if (core_proc_limits)
+ IOVEC_SET_STRING(iovec[j++], core_proc_limits);
+ }
+
+ p = procfs_file_alloca(pid, "cgroup");
+ if (read_full_file(p, &t, NULL) >=0) {
+ core_proc_cgroup = strappend("COREDUMP_PROC_CGROUP=", t);
+ free(t);
+
+ if (core_proc_cgroup)
+ IOVEC_SET_STRING(iovec[j++], core_proc_cgroup);
+ }
+
+ if (get_process_cwd(pid, &t) >= 0) {
+ core_cwd = strappend("COREDUMP_CWD=", t);
+ free(t);
+
+ if (core_cwd)
+ IOVEC_SET_STRING(iovec[j++], core_cwd);
+ }
+
+ if (get_process_root(pid, &t) >= 0) {
+ core_root = strappend("COREDUMP_ROOT=", t);
+ free(t);
+
+ if (core_root)
+ IOVEC_SET_STRING(iovec[j++], core_root);
+ }
+
+ if (get_process_environ(pid, &t) >= 0) {
+ core_environ = strappend("COREDUMP_ENVIRON=", t);
+ free(t);
+
+ if (core_environ)
+ IOVEC_SET_STRING(iovec[j++], core_environ);
+ }
+
core_timestamp = strjoin("COREDUMP_TIMESTAMP=", info[INFO_TIMESTAMP], "000000", NULL);
if (core_timestamp)
IOVEC_SET_STRING(iovec[j++], core_timestamp);
~ianmdlvl / elogind.git / blobdiff