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-rw-r--r--Makefile.am10
-rw-r--r--src/readahead/readahead-analyze.c141
-rw-r--r--src/readahead/readahead-collect.c2
-rw-r--r--src/readahead/readahead-common.h2
-rw-r--r--src/readahead/readahead-replay.c2
5 files changed, 154 insertions, 3 deletions
diff --git a/Makefile.am b/Makefile.am
index 976d4b28f6..9ffd8c7b44 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -2402,13 +2402,18 @@ systemd_readahead_collect_LDADD = \
systemd_readahead_replay_SOURCES = \
src/readahead/readahead-replay.c \
- src/readahead/readahead-common.c
+ src/readahead/readahead-common.c \
+ src/readahead/readahead-common.h
systemd_readahead_replay_LDADD = \
libsystemd-shared.la \
libsystemd-daemon.la \
libudev.la
+systemd_readahead_analyze_SOURCES = \
+ src/readahead/readahead-analyze.c \
+ src/readahead/readahead-common.h
+
pkginclude_HEADERS += \
src/systemd/sd-readahead.h
@@ -2416,6 +2421,9 @@ rootlibexec_PROGRAMS += \
systemd-readahead-collect \
systemd-readahead-replay
+bin_PROGRAMS += \
+ systemd-readahead-analyze
+
dist_systemunit_DATA += \
units/systemd-readahead-drop.service \
units/systemd-readahead-done.timer
diff --git a/src/readahead/readahead-analyze.c b/src/readahead/readahead-analyze.c
new file mode 100644
index 0000000000..6ee355146a
--- /dev/null
+++ b/src/readahead/readahead-analyze.c
@@ -0,0 +1,141 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2012 Auke Kok <auke-jan.h.kok@intel.com>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <inttypes.h>
+#include <linux/limits.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <string.h>
+
+#include "readahead-common.h"
+
+
+int main(int argc, char *argv[])
+{
+ char line[1024];
+ char path[PATH_MAX];
+ FILE *pack;
+ int a;
+ int missing = 0;
+ off_t size;
+ long tsize = 0;
+ uint64_t inode;
+ uint32_t b;
+ uint32_t c;
+ struct stat st;
+ int pagesize = getpagesize();
+
+ if (argc != 2)
+ snprintf(path, PATH_MAX, "/.readahead");
+ else
+ snprintf(path, PATH_MAX, "%s", argv[1]);
+
+ pack = fopen(path, "r");
+ if (!pack) {
+ fprintf(stderr, "Pack file missing\n");
+ exit(EXIT_FAILURE);
+ }
+
+ if (!(fgets(line, sizeof(line), pack))) {
+ fprintf(stderr, "Pack file corrupt\n");
+ exit(EXIT_FAILURE);
+ }
+
+ if (!strstr(line, READAHEAD_PACK_FILE_VERSION)) {
+ fprintf(stderr, "Pack file version incompatible with this parser\n");
+ exit(EXIT_FAILURE);
+ }
+
+ if ((a = getc(pack)) == EOF) {
+ fprintf(stderr, "Pack file corrupt\n");
+ exit(EXIT_FAILURE);
+ }
+
+ fprintf(stdout, " pct sections size: path\n");
+ fprintf(stdout, " === ======== ====: ====\n");
+
+ while(true) {
+ int pages = 0;
+ int sections = 0;
+
+ if (!fgets(path, sizeof(path), pack))
+ break; /* done */
+
+ path[strlen(path)-1] = 0;
+
+ if (fread(&inode, sizeof(inode), 1, pack) != 1) {
+ fprintf(stderr, "Pack file corrupt\n");
+ exit(EXIT_FAILURE);
+ }
+
+ while (true) {
+ if (fread(&b, sizeof(b), 1, pack) != 1 ||
+ fread(&c, sizeof(c), 1, pack) != 1) {
+ fprintf(stderr, "Pack file corrupt\n");
+ exit(EXIT_FAILURE);
+ }
+ if ((b == 0) && (c == 0))
+ break;
+
+ /* Uncomment this to get all the chunks separately
+ fprintf(stdout, " %d: %d %d\n", sections, b, c);
+ */
+
+ pages += (c - b);
+ sections++;
+ }
+
+ if (stat(path, &st) == 0) {
+ if (sections == 0)
+ size = st.st_size;
+ else
+ size = pages * pagesize;
+
+ tsize += size;
+
+ fprintf(stdout, " %4d%% (%2d) %12ld: %s\n",
+ sections ? (int)(size / st.st_size * 100.0) : 100,
+ sections ? sections : 1,
+ (unsigned long)size,
+ path);
+ } else {
+ fprintf(stdout, " %4dp (%2d) %12s: %s (MISSING)\n",
+ sections ? pages : -1,
+ sections ? sections : 1,
+ "???",
+ path);
+ missing++;
+ }
+
+ }
+
+ fprintf(stdout, "\nHOST: %s", line);
+ fprintf(stdout, "TYPE: %c\n", a);
+ fprintf(stdout, "MISSING: %d\n", missing);
+ fprintf(stdout, "TOTAL: %ld\n", tsize);
+
+ exit(EXIT_SUCCESS);
+}
diff --git a/src/readahead/readahead-collect.c b/src/readahead/readahead-collect.c
index 1d56b11065..c4bcd4e162 100644
--- a/src/readahead/readahead-collect.c
+++ b/src/readahead/readahead-collect.c
@@ -493,7 +493,7 @@ done:
goto finish;
}
- fputs(CANONICAL_HOST ";VERSION=2\n", pack);
+ fputs(CANONICAL_HOST READAHEAD_PACK_FILE_VERSION, pack);
putc(on_ssd ? 'S' : 'R', pack);
if (on_ssd || on_btrfs) {
diff --git a/src/readahead/readahead-common.h b/src/readahead/readahead-common.h
index 9962dd527a..3056a02485 100644
--- a/src/readahead/readahead-common.h
+++ b/src/readahead/readahead-common.h
@@ -29,6 +29,8 @@
#define READAHEAD_FILE_SIZE_MAX (10*1024*1024)
+#define READAHEAD_PACK_FILE_VERSION ";VERSION=2\n"
+
int file_verify(int fd, const char *fn, off_t file_size_max, struct stat *st);
int fs_on_ssd(const char *p);
diff --git a/src/readahead/readahead-replay.c b/src/readahead/readahead-replay.c
index 344dcd4041..fc2c33fcc1 100644
--- a/src/readahead/readahead-replay.c
+++ b/src/readahead/readahead-replay.c
@@ -183,7 +183,7 @@ static int replay(const char *root) {
char_array_0(line);
- if (!streq(line, CANONICAL_HOST ";VERSION=2\n")) {
+ if (!streq(line, CANONICAL_HOST READAHEAD_PACK_FILE_VERSION)) {
log_debug("Pack file host or version type mismatch.");
goto finish;
}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-11 21:47:15 +0000