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Code

logs-show: various cleanups

Browse Source 
Among other cleanups this introduces a threshold for the size of binary
blobs we serialize as integer arrays in the JSON output. THis can be
disabled via --all.
This commit is contained in:
Lennart Poettering 2012-09-27 23:27:10 +02:00
parent 8f14c8327b
commit 08ace05beb
5 changed files with 193 additions and 160 deletions
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5
src/journal/journalctl.c
View File

@ -730,7 +730,6 @@ static int verify(sd_journal *j) {
int main(int argc, char *argv[]) {
int r;
sd_journal *j = NULL;
unsigned line = 0;
bool need_seek = false;
sd_id128_t previous_boot_id;
bool previous_boot_id_valid = false;
@ -904,9 +903,7 @@ int main(int argc, char *argv[]) {
}
}
line ++;
r = output_journal(j, arg_output, line, 0, flags);
r = output_journal(stdout, j, arg_output, 0, flags);
if (r < 0)
goto finish;

328
src/shared/logs-show.c
View File

@ -31,6 +31,7 @@
#include "utf8.h"
#define PRINT_THRESHOLD 128
#define JSON_THRESHOLD 4096
static int parse_field(const void *data, size_t length, const char *field, char **target, size_t *target_size) {
size_t fl, nl;
@ -63,8 +64,10 @@ static int parse_field(const void *data, size_t length, const char *field, char
return 1;
}
static bool shall_print(bool show_all, char *p, size_t l) {
if (show_all)
static bool shall_print(const char *p, size_t l, OutputFlags flags) {
assert(p);
if (flags & OUTPUT_SHOW_ALL)
return true;
if (l > PRINT_THRESHOLD)
@ -76,78 +79,82 @@ static bool shall_print(bool show_all, char *p, size_t l) {
return true;
}
static int output_short(sd_journal *j, OutputMode mode, unsigned line, unsigned n_columns,
OutputFlags flags) {
static int output_short(
FILE *f,
sd_journal *j,
OutputMode mode,
unsigned n_columns,
OutputFlags flags) {
int r;
const void *data;
size_t length;
size_t n = 0;
char *hostname = NULL, *identifier = NULL, *comm = NULL, *pid = NULL, *fake_pid = NULL, *message = NULL, *realtime = NULL, *monotonic = NULL, *priority = NULL;
_cleanup_free_ char *hostname = NULL, *identifier = NULL, *comm = NULL, *pid = NULL, *fake_pid = NULL, *message = NULL, *realtime = NULL, *monotonic = NULL, *priority = NULL;
size_t hostname_len = 0, identifier_len = 0, comm_len = 0, pid_len = 0, fake_pid_len = 0, message_len = 0, realtime_len = 0, monotonic_len = 0, priority_len = 0;
int p = LOG_INFO;
const char *color_on = "", *color_off = "";
assert(f);
assert(j);
SD_JOURNAL_FOREACH_DATA(j, data, length) {
r = parse_field(data, length, "PRIORITY=", &priority, &priority_len);
if (r < 0)
goto finish;
return r;
else if (r > 0)
continue;
r = parse_field(data, length, "_HOSTNAME=", &hostname, &hostname_len);
if (r < 0)
goto finish;
return r;
else if (r > 0)
continue;
r = parse_field(data, length, "SYSLOG_IDENTIFIER=", &identifier, &identifier_len);
if (r < 0)
goto finish;
return r;
else if (r > 0)
continue;
r = parse_field(data, length, "_COMM=", &comm, &comm_len);
if (r < 0)
goto finish;
return r;
else if (r > 0)
continue;
r = parse_field(data, length, "_PID=", &pid, &pid_len);
if (r < 0)
goto finish;
return r;
else if (r > 0)
continue;
r = parse_field(data, length, "SYSLOG_PID=", &fake_pid, &fake_pid_len);
if (r < 0)
goto finish;
return r;
else if (r > 0)
continue;
r = parse_field(data, length, "_SOURCE_REALTIME_TIMESTAMP=", &realtime, &realtime_len);
if (r < 0)
goto finish;
return r;
else if (r > 0)
continue;
r = parse_field(data, length, "_SOURCE_MONOTONIC_TIMESTAMP=", &monotonic, &monotonic_len);
if (r < 0)
goto finish;
return r;
else if (r > 0)
continue;
r = parse_field(data, length, "MESSAGE=", &message, &message_len);
if (r < 0)
goto finish;
return r;
}
if (!message) {
r = 0;
goto finish;
}
if (!message)
return 0;
if (priority_len == 1 && *priority >= '0' && *priority <= '7')
p = *priority - '0';
@ -166,12 +173,12 @@ static int output_short(sd_journal *j, OutputMode mode, unsigned line, unsigned
if (r < 0) {
log_error("Failed to get monotonic: %s", strerror(-r));
goto finish;
return r;
}
printf("[%5llu.%06llu]",
(unsigned long long) (t / USEC_PER_SEC),
(unsigned long long) (t % USEC_PER_SEC));
fprintf(f, "[%5llu.%06llu]",
(unsigned long long) (t / USEC_PER_SEC),
(unsigned long long) (t % USEC_PER_SEC));
n += 1 + 5 + 1 + 6 + 1;
@ -191,42 +198,38 @@ static int output_short(sd_journal *j, OutputMode mode, unsigned line, unsigned
if (r < 0) {
log_error("Failed to get realtime: %s", strerror(-r));
goto finish;
return r;
}
t = (time_t) (x / USEC_PER_SEC);
if (strftime(buf, sizeof(buf), "%b %d %H:%M:%S", localtime_r(&t, &tm)) <= 0) {
log_error("Failed to format time.");
goto finish;
return r;
}
fputs(buf, stdout);
fputs(buf, f);
n += strlen(buf);
}
if (hostname && shall_print(flags & OUTPUT_SHOW_ALL,
hostname, hostname_len)) {
printf(" %.*s", (int) hostname_len, hostname);
if (hostname && shall_print(hostname, hostname_len, flags)) {
fprintf(f, " %.*s", (int) hostname_len, hostname);
n += hostname_len + 1;
}
if (identifier && shall_print(flags & OUTPUT_SHOW_ALL,
identifier, identifier_len)) {
printf(" %.*s", (int) identifier_len, identifier);
if (identifier && shall_print(identifier, identifier_len, flags)) {
fprintf(f, " %.*s", (int) identifier_len, identifier);
n += identifier_len + 1;
} else if (comm && shall_print(flags & OUTPUT_SHOW_ALL,
comm, comm_len)) {
printf(" %.*s", (int) comm_len, comm);
} else if (comm && shall_print(comm, comm_len, flags)) {
fprintf(f, " %.*s", (int) comm_len, comm);
n += comm_len + 1;
} else
putchar(' ');
fputc(' ', f);
if (pid && shall_print(flags & OUTPUT_SHOW_ALL, pid, pid_len)) {
printf("[%.*s]", (int) pid_len, pid);
if (pid && shall_print(pid, pid_len, flags)) {
fprintf(f, "[%.*s]", (int) pid_len, pid);
n += pid_len + 2;
} else if (fake_pid && shall_print(flags & OUTPUT_SHOW_ALL,
fake_pid, fake_pid_len)) {
printf("[%.*s]", (int) fake_pid_len, fake_pid);
} else if (fake_pid && shall_print(fake_pid, fake_pid_len, flags)) {
fprintf(f, "[%.*s]", (int) fake_pid_len, fake_pid);
n += fake_pid_len + 2;
}
@ -240,46 +243,37 @@ static int output_short(sd_journal *j, OutputMode mode, unsigned line, unsigned
}
}
if (flags & OUTPUT_SHOW_ALL)
printf(": %s%.*s%s\n", color_on, (int) message_len, message, color_off);
if (flags)
fprintf(f, ": %s%.*s%s\n", color_on, (int) message_len, message, color_off);
else if (!utf8_is_printable_n(message, message_len)) {
char bytes[FORMAT_BYTES_MAX];
printf(": [%s blob data]\n", format_bytes(bytes, sizeof(bytes), message_len));
} else if ((flags & OUTPUT_FULL_WIDTH) ||
(message_len + n + 1 < n_columns))
printf(": %s%.*s%s\n", color_on, (int) message_len, message, color_off);
fprintf(f, ": [%s blob data]\n", format_bytes(bytes, sizeof(bytes), message_len));
} else if ((flags & OUTPUT_FULL_WIDTH) || (message_len + n + 1 < n_columns))
fprintf(f, ": %s%.*s%s\n", color_on, (int) message_len, message, color_off);
else if (n < n_columns && n_columns - n - 2 >= 3) {
char *e;
e = ellipsize_mem(message, message_len, n_columns - n - 2, 90);
if (!e)
printf(": %s%.*s%s\n", color_on, (int) message_len, message, color_off);
fprintf(f, ": %s%.*s%s\n", color_on, (int) message_len, message, color_off);
else
printf(": %s%s%s\n", color_on, e, color_off);
fprintf(f, ": %s%s%s\n", color_on, e, color_off);
free(e);
} else
fputs("\n", stdout);
fputs("\n", f);
r = 0;
finish:
free(hostname);
free(identifier);
free(comm);
free(pid);
free(fake_pid);
free(message);
free(monotonic);
free(realtime);
free(priority);
return r;
return 0;
}
static int output_verbose(sd_journal *j, OutputMode mode, unsigned line,
unsigned n_columns, OutputFlags flags) {
static int output_verbose(
FILE *f,
sd_journal *j,
OutputMode mode,
unsigned n_columns,
OutputFlags flags) {
const void *data;
size_t length;
char *cursor;
@ -287,6 +281,7 @@ static int output_verbose(sd_journal *j, OutputMode mode, unsigned line,
char ts[FORMAT_TIMESTAMP_MAX];
int r;
assert(f);
assert(j);
r = sd_journal_get_realtime_usec(j, &realtime);
@ -301,15 +296,14 @@ static int output_verbose(sd_journal *j, OutputMode mode, unsigned line,
return r;
}
printf("%s [%s]\n",
format_timestamp(ts, sizeof(ts), realtime),
cursor);
fprintf(f, "%s [%s]\n",
format_timestamp(ts, sizeof(ts), realtime),
cursor);
free(cursor);
SD_JOURNAL_FOREACH_DATA(j, data, length) {
if (!(flags & OUTPUT_SHOW_ALL) && (length > PRINT_THRESHOLD ||
!utf8_is_printable_n(data, length))) {
if (!shall_print(data, length, flags)) {
const char *c;
char bytes[FORMAT_BYTES_MAX];
@ -319,19 +313,24 @@ static int output_verbose(sd_journal *j, OutputMode mode, unsigned line,
return -EINVAL;
}
printf("\t%.*s=[%s blob data]\n",
fprintf(f, "\t%.*s=[%s blob data]\n",
(int) (c - (const char*) data),
(const char*) data,
format_bytes(bytes, sizeof(bytes), length - (c - (const char *) data) - 1));
} else
printf("\t%.*s\n", (int) length, (const char*) data);
fprintf(f, "\t%.*s\n", (int) length, (const char*) data);
}
return 0;
}
static int output_export(sd_journal *j, OutputMode mode, unsigned line,
unsigned n_columns, OutputFlags flags) {
static int output_export(
FILE *f,
sd_journal *j,
OutputMode mode,
unsigned n_columns,
OutputFlags flags) {
sd_id128_t boot_id;
char sid[33];
int r;
@ -360,14 +359,15 @@ static int output_export(sd_journal *j, OutputMode mode, unsigned line,
return r;
}
printf("__CURSOR=%s\n"
"__REALTIME_TIMESTAMP=%llu\n"
"__MONOTONIC_TIMESTAMP=%llu\n"
"_BOOT_ID=%s\n",
cursor,
(unsigned long long) realtime,
(unsigned long long) monotonic,
sd_id128_to_string(boot_id, sid));
fprintf(f,
"__CURSOR=%s\n"
"__REALTIME_TIMESTAMP=%llu\n"
"__MONOTONIC_TIMESTAMP=%llu\n"
"_BOOT_ID=%s\n",
cursor,
(unsigned long long) realtime,
(unsigned long long) monotonic,
sd_id128_to_string(boot_id, sid));
free(cursor);
@ -389,61 +389,80 @@ static int output_export(sd_journal *j, OutputMode mode, unsigned line,
return -EINVAL;
}
fwrite(data, c - (const char*) data, 1, stdout);
fputc('\n', stdout);
fwrite(data, c - (const char*) data, 1, f);
fputc('\n', f);
le64 = htole64(length - (c - (const char*) data) - 1);
fwrite(&le64, sizeof(le64), 1, stdout);
fwrite(c + 1, length - (c - (const char*) data) - 1, 1, stdout);
fwrite(&le64, sizeof(le64), 1, f);
fwrite(c + 1, length - (c - (const char*) data) - 1, 1, f);
} else
fwrite(data, length, 1, stdout);
fwrite(data, length, 1, f);
fputc('\n', stdout);
fputc('\n', f);
}
fputc('\n', stdout);
fputc('\n', f);
return 0;
}
static void json_escape(const char* p, size_t l) {
if (!utf8_is_printable_n(p, l)) {
static void json_escape(
FILE *f,
const char* p,
size_t l,
OutputFlags flags) {
assert(f);
assert(p);
if (!(flags & OUTPUT_SHOW_ALL) && l > JSON_THRESHOLD)
fputs("null", f);
else if (!utf8_is_printable_n(p, l)) {
bool not_first = false;
fputs("[ ", stdout);
fputs("[ ", f);
while (l > 0) {
if (not_first)
printf(", %u", (uint8_t) *p);
fprintf(f, ", %u", (uint8_t) *p);
else {
not_first = true;
printf("%u", (uint8_t) *p);
fprintf(f, "%u", (uint8_t) *p);
}
p++;
l--;
}
fputs(" ]", stdout);
fputs(" ]", f);
} else {
fputc('\"', stdout);
fputc('\"', f);
while (l > 0) {
if (*p == '"' || *p == '\\') {
fputc('\\', stdout);
fputc(*p, stdout);
} else
fputc(*p, stdout);
fputc('\\', f);
fputc(*p, f);
} else if (*p < ' ')
fprintf(f, "\\u%04x", *p);
else
fputc(*p, f);
p++;
l--;
}
fputc('\"', stdout);
fputc('\"', f);
}
}
static int output_json(sd_journal *j, OutputMode mode, unsigned line,
unsigned n_columns, OutputFlags flags) {
static int output_json(
FILE *f,
sd_journal *j,
OutputMode mode,
unsigned n_columns,
OutputFlags flags) {
uint64_t realtime, monotonic;
char *cursor;
const void *data;
@ -473,24 +492,26 @@ static int output_json(sd_journal *j, OutputMode mode, unsigned line,
}
if (mode == OUTPUT_JSON_PRETTY)
printf("{\n"
"\t\"__CURSOR\" : \"%s\",\n"
"\t\"__REALTIME_TIMESTAMP\" : \"%llu\",\n"
"\t\"__MONOTONIC_TIMESTAMP\" : \"%llu\",\n"
"\t\"_BOOT_ID\" : \"%s\"",
cursor,
(unsigned long long) realtime,
(unsigned long long) monotonic,
sd_id128_to_string(boot_id, sid));
fprintf(f,
"{\n"
"\t\"__CURSOR\" : \"%s\",\n"
"\t\"__REALTIME_TIMESTAMP\" : \"%llu\",\n"
"\t\"__MONOTONIC_TIMESTAMP\" : \"%llu\",\n"
"\t\"_BOOT_ID\" : \"%s\"",
cursor,
(unsigned long long) realtime,
(unsigned long long) monotonic,
sd_id128_to_string(boot_id, sid));
else
printf("{ \"__CURSOR\" : \"%s\", "
"\"__REALTIME_TIMESTAMP\" : \"%llu\", "
"\"__MONOTONIC_TIMESTAMP\" : \"%llu\", "
"\"_BOOT_ID\" : \"%s\"",
cursor,
(unsigned long long) realtime,
(unsigned long long) monotonic,
sd_id128_to_string(boot_id, sid));
fprintf(f,
"{ \"__CURSOR\" : \"%s\", "
"\"__REALTIME_TIMESTAMP\" : \"%llu\", "
"\"__MONOTONIC_TIMESTAMP\" : \"%llu\", "
"\"_BOOT_ID\" : \"%s\"",
cursor,
(unsigned long long) realtime,
(unsigned long long) monotonic,
sd_id128_to_string(boot_id, sid));
free(cursor);
SD_JOURNAL_FOREACH_DATA(j, data, length) {
@ -509,30 +530,36 @@ static int output_json(sd_journal *j, OutputMode mode, unsigned line,
}
if (mode == OUTPUT_JSON_PRETTY)
fputs(",\n\t", stdout);
fputs(",\n\t", f);
else
fputs(", ", stdout);
fputs(", ", f);
json_escape(data, c - (const char*) data);
fputs(" : ", stdout);
json_escape(c + 1, length - (c - (const char*) data) - 1);
json_escape(f, data, c - (const char*) data, flags);
fputs(" : ", f);
json_escape(f, c + 1, length - (c - (const char*) data) - 1, flags);
}
if (mode == OUTPUT_JSON_PRETTY)
fputs("\n}\n", stdout);
fputs("\n}\n", f);
else
fputs(" }\n", stdout);
fputs(" }\n", f);
return 0;
}
static int output_cat(sd_journal *j, OutputMode mode, unsigned line,
unsigned n_columns, OutputFlags flags) {
static int output_cat(
FILE *f,
sd_journal *j,
OutputMode mode,
unsigned n_columns,
OutputFlags flags) {
const void *data;
size_t l;
int r;
assert(j);
assert(f);
r = sd_journal_get_data(j, "MESSAGE", &data, &l);
if (r < 0) {
@ -546,14 +573,19 @@ static int output_cat(sd_journal *j, OutputMode mode, unsigned line,
assert(l >= 8);
fwrite((const char*) data + 8, 1, l - 8, stdout);
putchar('\n');
fwrite((const char*) data + 8, 1, l - 8, f);
fputc('\n', f);
return 0;
}
static int (*output_funcs[_OUTPUT_MODE_MAX])(sd_journal*j, OutputMode mode, unsigned line,
unsigned n_columns, OutputFlags flags) = {
static int (*output_funcs[_OUTPUT_MODE_MAX])(
FILE *f,
sd_journal*j,
OutputMode mode,
unsigned n_columns,
OutputFlags flags) = {
[OUTPUT_SHORT] = output_short,
[OUTPUT_SHORT_MONOTONIC] = output_short,
[OUTPUT_VERBOSE] = output_verbose,
@ -563,8 +595,13 @@ static int (*output_funcs[_OUTPUT_MODE_MAX])(sd_journal*j, OutputMode mode, unsi
[OUTPUT_CAT] = output_cat
};
int output_journal(sd_journal *j, OutputMode mode, unsigned line,
unsigned n_columns, OutputFlags flags) {
int output_journal(
FILE *f,
sd_journal *j,
OutputMode mode,
unsigned n_columns,
OutputFlags flags) {
int ret;
assert(mode >= 0);
assert(mode < _OUTPUT_MODE_MAX);
@ -572,12 +609,13 @@ int output_journal(sd_journal *j, OutputMode mode, unsigned line,
if (n_columns <= 0)
n_columns = columns();
ret = output_funcs[mode](j, mode, line, n_columns, flags);
ret = output_funcs[mode](f, j, mode, n_columns, flags);
fflush(stdout);
return ret;
}
int show_journal_by_unit(
FILE *f,
const char *unit,
OutputMode mode,
unsigned n_columns,
@ -585,7 +623,7 @@ int show_journal_by_unit(
unsigned how_many,
OutputFlags flags) {
char *m1 = NULL, *m2 = NULL, *m3 = NULL;
_cleanup_free_ char *m1 = NULL, *m2 = NULL, *m3 = NULL;
sd_journal *j = NULL;
int r;
unsigned line = 0;
@ -652,11 +690,6 @@ int show_journal_by_unit(
if (r < 0)
goto finish;
if (mode == OUTPUT_JSON) {
fputc('[', stdout);
fflush(stdout);
}
for (;;) {
for (;;) {
usec_t usec;
@ -688,7 +721,7 @@ int show_journal_by_unit(
line ++;
r = output_journal(j, mode, line, n_columns, flags);
r = output_journal(f, j, mode, n_columns, flags);
if (r < 0)
goto finish;
}
@ -708,7 +741,7 @@ int show_journal_by_unit(
goto finish;
if (r > 0 && not_before < cutoff)
printf("Warning: Journal has been rotated since unit was started. Log output is incomplete or unavailable.\n");
fprintf(f, "Warning: Journal has been rotated since unit was started. Log output is incomplete or unavailable.\n");
warn_cutoff = false;
}
@ -722,14 +755,7 @@ int show_journal_by_unit(
}
if (mode == OUTPUT_JSON)
fputs("\n]\n", stdout);
finish:
free(m1);
free(m2);
free(m3);
if (j)
sd_journal_close(j);

9
src/shared/logs-show.h
View File

@ -47,10 +47,15 @@ typedef enum OutputFlags {
OUTPUT_COLOR = 1 << 4
} OutputFlags;
int output_journal(sd_journal *j, OutputMode mode, unsigned line,
unsigned n_columns, OutputFlags flags);
int output_journal(
FILE *f,
sd_journal *j,
OutputMode mode,
unsigned n_columns,
OutputFlags flags);
int show_journal_by_unit(
FILE *f,
const char *unit,
OutputMode mode,
unsigned n_columns,

3
src/shared/util.c
View File

@ -1688,7 +1688,8 @@ char *xescape(const char *s, const char *bad) {
* chars, in \xFF style escaping. May be reversed with
* cunescape. */
if (!(r = new(char, strlen(s)*4+1)))
r = new(char, strlen(s) * 4 + 1);
if (!r)
return NULL;
for (f = s, t = r; *f; f++) {

8
src/systemctl/systemctl.c
View File

@ -2279,9 +2279,13 @@ static void print_status_info(UnitStatusInfo *i) {
on_tty() * OUTPUT_COLOR;
printf("\n");
show_journal_by_unit(i->id, arg_output, 0,
show_journal_by_unit(stdout,
i->id,
arg_output,
0,
i->inactive_exit_timestamp_monotonic,
arg_lines, flags);
arg_lines,
flags);
}
if (i->need_daemon_reload)