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-rw-r--r--src/journal/coredump.c22
-rw-r--r--src/journal/coredumpctl.c301
2 files changed, 153 insertions, 170 deletions
diff --git a/src/journal/coredump.c b/src/journal/coredump.c
index afd69cda5d..bb6dcba040 100644
--- a/src/journal/coredump.c
+++ b/src/journal/coredump.c
@@ -465,13 +465,13 @@ 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,
- *coredump_filename = NULL, *core_slice = NULL, *core_cgroup = NULL, *core_owner_uid = NULL,
- *exe = NULL, *comm = NULL;
+ *core_slice = NULL, *core_cgroup = NULL, *core_owner_uid = NULL,
+ *exe = NULL, *comm = NULL, *filename = NULL;
const char *info[_INFO_LEN];
_cleanup_close_ int coredump_fd = -1;
- struct iovec iovec[17];
+ struct iovec iovec[18];
off_t coredump_size;
int r, j = 0;
uid_t uid, owner_uid;
@@ -548,15 +548,15 @@ int main(int argc, char* argv[]) {
if (arg_storage != COREDUMP_STORAGE_NONE)
arg_storage = COREDUMP_STORAGE_EXTERNAL;
- r = save_external_coredump(info, uid, &coredump_filename, &coredump_fd, &coredump_size);
+ r = save_external_coredump(info, uid, &filename, &coredump_fd, &coredump_size);
if (r < 0)
goto finish;
- r = maybe_remove_external_coredump(coredump_filename, coredump_size);
+ r = maybe_remove_external_coredump(filename, coredump_size);
if (r < 0)
goto finish;
- log_info("Detected coredump of the journal daemon itself, diverted to %s.", coredump_filename);
+ log_info("Detected coredump of the journal daemon itself, diverted to %s.", filename);
goto finish;
}
@@ -647,7 +647,7 @@ int main(int argc, char* argv[]) {
IOVEC_SET_STRING(iovec[j++], "PRIORITY=2");
/* Always stream the coredump to disk, if that's possible */
- r = save_external_coredump(info, uid, &coredump_filename, &coredump_fd, &coredump_size);
+ r = save_external_coredump(info, uid, &filename, &coredump_fd, &coredump_size);
if (r < 0)
/* skip whole core dumping part */
goto log;
@@ -656,9 +656,15 @@ int main(int argc, char* argv[]) {
* now, as later on we will lack the privileges for
* it. However, we keep the fd to it, so that we can still
* process it and log it. */
- r = maybe_remove_external_coredump(coredump_filename, coredump_size);
+ r = maybe_remove_external_coredump(filename, coredump_size);
if (r < 0)
goto finish;
+ if (r == 0) {
+ const char *coredump_filename;
+
+ coredump_filename = strappenda("COREDUMP_FILENAME=", filename);
+ IOVEC_SET_STRING(iovec[j++], coredump_filename);
+ }
/* Now, let's drop privileges to become the user who owns the
* segfaulted process and allocate the coredump memory under
diff --git a/src/journal/coredumpctl.c b/src/journal/coredumpctl.c
index 48e63415b1..08d8cdfeb7 100644
--- a/src/journal/coredumpctl.c
+++ b/src/journal/coredumpctl.c
@@ -37,6 +37,7 @@
#include "macro.h"
#include "journal-internal.h"
#include "copy.h"
+#include "compress.h"
static enum {
ACTION_NONE,
@@ -280,55 +281,6 @@ static int retrieve(const void *data,
return 0;
}
-#define filename_escape(s) xescape((s), "./ ")
-
-static int make_coredump_path(sd_journal *j, char **ret) {
- _cleanup_free_ char
- *pid = NULL, *boot_id = NULL, *tstamp = NULL, *comm = NULL,
- *p = NULL, *b = NULL, *t = NULL, *c = NULL;
- const void *d;
- size_t l;
- char *fn;
-
- assert(j);
- assert(ret);
-
- SD_JOURNAL_FOREACH_DATA(j, d, l) {
- retrieve(d, l, "COREDUMP_COMM", &comm);
- retrieve(d, l, "COREDUMP_PID", &pid);
- retrieve(d, l, "COREDUMP_TIMESTAMP", &tstamp);
- retrieve(d, l, "_BOOT_ID", &boot_id);
- }
-
- if (!pid || !comm || !tstamp || !boot_id) {
- log_error("Failed to retrieve necessary fields to find coredump on disk.");
- return -ENOENT;
- }
-
- p = filename_escape(pid);
- if (!p)
- return log_oom();
-
- t = filename_escape(tstamp);
- if (!t)
- return log_oom();
-
- c = filename_escape(comm);
- if (!t)
- return log_oom();
-
- b = filename_escape(boot_id);
- if (!b)
- return log_oom();
-
- fn = strjoin("/var/lib/systemd/coredump/core.", c, ".", b, ".", p, ".", t, NULL);
- if (!fn)
- return log_oom();
-
- *ret = fn;
- return 0;
-}
-
static void print_field(FILE* file, sd_journal *j) {
_cleanup_free_ char *value = NULL;
const void *d;
@@ -349,12 +301,14 @@ static void print_field(FILE* file, sd_journal *j) {
static int print_list(FILE* file, sd_journal *j, int had_legend) {
_cleanup_free_ char
*pid = NULL, *uid = NULL, *gid = NULL,
- *sgnl = NULL, *exe = NULL, *comm = NULL, *cmdline = NULL;
+ *sgnl = NULL, *exe = NULL, *comm = NULL, *cmdline = NULL,
+ *filename = NULL;
const void *d;
size_t l;
usec_t t;
char buf[FORMAT_TIMESTAMP_MAX];
int r;
+ bool present;
assert(file);
assert(j);
@@ -367,9 +321,10 @@ static int print_list(FILE* file, sd_journal *j, int had_legend) {
retrieve(d, l, "COREDUMP_EXE", &exe);
retrieve(d, l, "COREDUMP_COMM", &comm);
retrieve(d, l, "COREDUMP_CMDLINE", &cmdline);
+ retrieve(d, l, "COREDUMP_FILENAME", &filename);
}
- if (!pid && !uid && !gid && !sgnl && !exe && !comm && !cmdline) {
+ if (!pid && !uid && !gid && !sgnl && !exe && !comm && !cmdline && !filename) {
log_warning("Empty coredump log entry");
return -EINVAL;
}
@@ -381,22 +336,25 @@ static int print_list(FILE* file, sd_journal *j, int had_legend) {
}
format_timestamp(buf, sizeof(buf), t);
+ present = filename && access(filename, F_OK) == 0;
if (!had_legend && !arg_no_legend)
- fprintf(file, "%-*s %*s %*s %*s %*s %s\n",
+ fprintf(file, "%-*s %*s %*s %*s %*s %*s %s\n",
FORMAT_TIMESTAMP_WIDTH, "TIME",
6, "PID",
5, "UID",
5, "GID",
3, "SIG",
+ 1, "PRESENT",
"EXE");
- fprintf(file, "%-*s %*s %*s %*s %*s %s\n",
+ fprintf(file, "%-*s %*s %*s %*s %*s %*s %s\n",
FORMAT_TIMESTAMP_WIDTH, buf,
6, strna(pid),
5, strna(uid),
5, strna(gid),
3, strna(sgnl),
+ 1, present ? "*" : "",
strna(exe ?: (comm ?: cmdline)));
return 0;
@@ -408,8 +366,8 @@ static int print_info(FILE *file, sd_journal *j, bool need_space) {
*sgnl = NULL, *exe = NULL, *comm = NULL, *cmdline = NULL,
*unit = NULL, *user_unit = NULL, *session = NULL,
*boot_id = NULL, *machine_id = NULL, *hostname = NULL,
- *coredump = NULL, *slice = NULL, *cgroup = NULL,
- *owner_uid = NULL, *message = NULL, *timestamp = NULL;
+ *slice = NULL, *cgroup = NULL, *owner_uid = NULL,
+ *message = NULL, *timestamp = NULL, *filename = NULL;
const void *d;
size_t l;
int r;
@@ -432,6 +390,7 @@ static int print_info(FILE *file, sd_journal *j, bool need_space) {
retrieve(d, l, "COREDUMP_SLICE", &slice);
retrieve(d, l, "COREDUMP_CGROUP", &cgroup);
retrieve(d, l, "COREDUMP_TIMESTAMP", &timestamp);
+ retrieve(d, l, "COREDUMP_FILENAME", &filename);
retrieve(d, l, "_BOOT_ID", &boot_id);
retrieve(d, l, "_MACHINE_ID", &machine_id);
retrieve(d, l, "_HOSTNAME", &hostname);
@@ -546,9 +505,8 @@ static int print_info(FILE *file, sd_journal *j, bool need_space) {
if (hostname)
fprintf(file, " Hostname: %s\n", hostname);
- if (make_coredump_path(j, &coredump) >= 0)
- if (access(coredump, F_OK) >= 0)
- fprintf(file, " Coredump: %s\n", coredump);
+ if (filename && access(filename, F_OK) == 0)
+ fprintf(file, " Coredump: %s\n", filename);
if (message) {
_cleanup_free_ char *m = NULL;
@@ -619,66 +577,131 @@ static int dump_list(sd_journal *j) {
return 0;
}
-static int dump_core(sd_journal* j) {
- const void *data;
- size_t len, ret;
+static int save_core(sd_journal *j, int fd, char **path, bool *unlink_temp) {
+ const char *data;
+ _cleanup_free_ char *filename = NULL;
+ size_t len;
int r;
- assert(j);
+ assert((fd >= 0) != !!path);
+ assert(!!path == !!unlink_temp);
- /* We want full data, nothing truncated. */
- sd_journal_set_data_threshold(j, 0);
+ /* Prefer uncompressed file to journal (probably cached) to
+ * compressed file (probably uncached). */
+ r = sd_journal_get_data(j, "COREDUMP_FILENAME", (const void**) &data, &len);
+ if (r < 0 && r != -ENOENT)
+ log_warning("Failed to retrieve COREDUMP_FILENAME: %s", strerror(-r));
+ else if (r == 0)
+ retrieve(data, len, "COREDUMP_FILENAME", &filename);
- r = focus(j);
- if (r < 0)
- return r;
-
- print_info(output ? stdout : stderr, j, false);
-
- if (on_tty() && !output) {
- log_error("Refusing to dump core to tty.");
- return -ENOTTY;
+ if (filename && access(filename, R_OK) < 0) {
+ log_debug("File %s is not readable: %m", filename);
+ free(filename);
+ filename = NULL;
}
- r = sd_journal_get_data(j, "COREDUMP", (const void**) &data, &len);
- if (r == ENOENT) {
- _cleanup_free_ char *fn = NULL;
- _cleanup_close_ int fd = -1;
+ if (filename && !endswith(filename, ".xz")) {
+ *path = filename;
+ filename = NULL;
- r = make_coredump_path(j, &fn);
- if (r < 0)
- return r;
+ return 0;
+ } else {
+ _cleanup_close_ int fdt = -1;
+ char *temp = NULL;
- fd = open(fn, O_RDONLY|O_CLOEXEC|O_NOCTTY);
if (fd < 0) {
- if (errno == ENOENT)
+ temp = strdup("/var/tmp/coredump-XXXXXX");
+ if (!temp)
+ return log_oom();
+
+ fdt = mkostemp_safe(temp, O_WRONLY|O_CLOEXEC);
+ if (fdt < 0) {
+ log_error("Failed to create temporary file: %m");
+ return -errno;
+ }
+ log_debug("Created temporary file %s", temp);
+
+ fd = fdt;
+ }
+
+ r = sd_journal_get_data(j, "COREDUMP", (const void**) &data, &len);
+ if (r == 0) {
+ ssize_t sz;
+
+ assert(len >= 9);
+ data += 9;
+ len -= 9;
+
+ sz = write(fdt, data, len);
+ if (sz < 0) {
+ log_error("Failed to write temporary file: %m");
+ r = -errno;
+ goto error;
+ }
+ if (sz != (ssize_t) len) {
+ log_error("Short write to temporary file.");
+ r = -EIO;
+ goto error;
+ }
+ } else if (filename) {
+ _cleanup_close_ int fdf;
+
+ fdf = open(filename, O_RDONLY | O_CLOEXEC);
+ if (fdf < 0) {
+ log_error("Failed to open %s: %m", filename);
+ r = -errno;
+ goto error;
+ }
+
+ r = decompress_stream(fdf, fd, -1);
+ if (r < 0) {
+ log_error("Failed to decompress %s: %s", filename, strerror(-r));
+ goto error;
+ }
+ } else {
+ if (r == -ENOENT)
log_error("Coredump neither in journal file nor stored externally on disk.");
else
- log_error("Failed to open coredump file: %s", strerror(-r));
+ log_error("Failed to retrieve COREDUMP field: %s", strerror(-r));
+ goto error;
+ }
- return -errno;
+ if (temp) {
+ *path = temp;
+ *unlink_temp = true;
}
- r = copy_bytes(fd, output ? fileno(output) : STDOUT_FILENO, (off_t) -1);
- if (r < 0) {
- log_error("Failed to stream coredump: %s", strerror(-r));
- return r;
+ return 0;
+
+error:
+ if (temp) {
+ unlink(temp);
+ log_debug("Removed temporary file %s", temp);
}
+ return r;
+ }
+}
- } else if (r < 0) {
- log_error("Failed to retrieve COREDUMP field: %s", strerror(-r));
+static int dump_core(sd_journal* j) {
+ int r;
+
+ assert(j);
+
+ r = focus(j);
+ if (r < 0)
return r;
- } else {
- assert(len >= 9);
- data = (const uint8_t*) data + 9;
- len -= 9;
-
- ret = fwrite(data, len, 1, output ?: stdout);
- if (ret != 1) {
- log_error("Dumping coredump failed: %m (%zu)", ret);
- return -errno;
- }
+ print_info(output ? stdout : stderr, j, false);
+
+ if (on_tty() && !output) {
+ log_error("Refusing to dump core to tty.");
+ return -ENOTTY;
+ }
+
+ r = save_core(j, output ? fileno(output) : STDOUT_FILENO, NULL, NULL);
+ if (r < 0) {
+ log_error("Coredump retrieval failed: %s", strerror(-r));
+ return r;
}
r = sd_journal_previous(j);
@@ -690,11 +713,9 @@ static int dump_core(sd_journal* j) {
static int run_gdb(sd_journal *j) {
- _cleanup_free_ char *exe = NULL, *coredump = NULL;
- char temp[] = "/var/tmp/coredump-XXXXXX";
- bool unlink_temp = false;
- const char *path;
- const void *data;
+ _cleanup_free_ char *exe = NULL, *coredump = NULL, *path = NULL;
+ bool unlink_path = false;
+ const char *data;
siginfo_t st;
size_t len;
pid_t pid;
@@ -702,8 +723,6 @@ static int run_gdb(sd_journal *j) {
assert(j);
- sd_journal_set_data_threshold(j, 0);
-
r = focus(j);
if (r < 0)
return r;
@@ -717,9 +736,9 @@ static int run_gdb(sd_journal *j) {
return r;
}
- assert(len >= 13);
- data = (const uint8_t*) data + 13;
- len -= 13;
+ assert(len > strlen("COREDUMP_EXE="));
+ data += strlen("COREDUMP_EXE=");
+ len -= strlen("COREDUMP_EXE=");
exe = strndup(data, len);
if (!exe)
@@ -735,57 +754,10 @@ static int run_gdb(sd_journal *j) {
return -ENOENT;
}
- r = sd_journal_get_data(j, "COREDUMP", (const void**) &data, &len);
- if (r == -ENOENT) {
-
- r = make_coredump_path(j, &coredump);
- if (r < 0)
- return r;
-
- if (access(coredump, R_OK) < 0) {
- if (errno == ENOENT)
- log_error("Coredump neither in journal file nor stored externally on disk.");
- else
- log_error("Failed to access coredump file: %m");
-
- return -errno;
- }
-
- path = coredump;
-
- } else if (r < 0) {
- log_error("Failed to retrieve COREDUMP field: %s", strerror(-r));
+ r = save_core(j, -1, &path, &unlink_path);
+ if (r < 0) {
+ log_error("Failed to retrieve core: %s", strerror(-r));
return r;
-
- } else {
- _cleanup_close_ int fd = -1;
- ssize_t sz;
-
- assert(len >= 9);
- data = (const uint8_t*) data + 9;
- len -= 9;
-
- fd = mkostemp_safe(temp, O_WRONLY|O_CLOEXEC);
- if (fd < 0) {
- log_error("Failed to create temporary file: %m");
- return -errno;
- }
-
- unlink_temp = true;
-
- sz = write(fd, data, len);
- if (sz < 0) {
- log_error("Failed to write temporary file: %m");
- r = -errno;
- goto finish;
- }
- if (sz != (ssize_t) len) {
- log_error("Short write to temporary file.");
- r = -EIO;
- goto finish;
- }
-
- path = temp;
}
pid = fork();
@@ -810,8 +782,10 @@ static int run_gdb(sd_journal *j) {
r = st.si_code == CLD_EXITED ? st.si_status : 255;
finish:
- if (unlink_temp)
- unlink(temp);
+ if (unlink_path) {
+ log_debug("Removed temporary file %s", path);
+ unlink(path);
+ }
return r;
}
@@ -846,6 +820,9 @@ int main(int argc, char *argv[]) {
goto end;
}
+ /* We want full data, nothing truncated. */
+ sd_journal_set_data_threshold(j, 0);
+
SET_FOREACH(match, matches, it) {
r = sd_journal_add_match(j, match, strlen(match));
if (r != 0) {
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-24 20:27:55 +0000