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l---------src/readahead/Makefile1
-rw-r--r--src/readahead/readahead-analyze.c146
-rw-r--r--src/readahead/readahead-collect.c650
-rw-r--r--src/readahead/readahead-common.c398
-rw-r--r--src/readahead/readahead-common.h61
-rw-r--r--src/readahead/readahead-replay.c281
-rw-r--r--src/readahead/readahead.c163
-rw-r--r--src/readahead/sd-readahead.c89
-rw-r--r--src/readahead/test-ssd.c41
9 files changed, 0 insertions, 1830 deletions
diff --git a/src/readahead/Makefile b/src/readahead/Makefile
deleted file mode 120000
index d0b0e8e008..0000000000
--- a/src/readahead/Makefile
+++ /dev/null
@@ -1 +0,0 @@
-../Makefile \ No newline at end of file
diff --git a/src/readahead/readahead-analyze.c b/src/readahead/readahead-analyze.c
deleted file mode 100644
index 76db3cb7e4..0000000000
--- a/src/readahead/readahead-analyze.c
+++ /dev/null
@@ -1,146 +0,0 @@
-/*-*- 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_analyze(const char *pack_path) {
- char line[LINE_MAX];
- _cleanup_fclose_ FILE *pack = NULL;
- int a;
- int missing = 0;
- size_t tsize = 0;
-
- if (!pack_path)
- pack_path = "/.readahead";
-
- pack = fopen(pack_path, "re");
- if (!pack) {
- log_error("Pack file missing.");
- goto fail;
- }
-
- if (!fgets(line, sizeof(line), pack)) {
- log_error("Pack file corrupt.");
- goto fail;
- }
-
- char_array_0(line);
-
- if (!endswith(line, READAHEAD_PACK_FILE_VERSION)) {
- log_error("Pack file version incompatible with this parser.");
- goto fail;
- }
-
- if ((a = getc(pack)) == EOF) {
- log_error("Pack file corrupt.");
- goto fail;
- }
-
- fputs(" pct sections size: path\n"
- " === ======== ====: ====\n", stdout);
-
- for (;;) {
- char path[PATH_MAX];
- struct stat st;
- uint64_t inode;
- 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) {
- log_error("Pack file corrupt.");
- goto fail;
- }
-
- for (;;) {
- uint32_t b, c;
-
- if (fread(&b, sizeof(b), 1, pack) != 1 ||
- fread(&c, sizeof(c), 1, pack) != 1) {
- log_error("Pack file corrupt.");
- goto fail;
- }
- if ((b == 0) && (c == 0))
- break;
-
- /* Uncomment this to get all the chunks separately
- printf(" %d: %d %d\n", sections, b, c);
- */
-
- pages += (c - b);
- sections++;
- }
-
- if (stat(path, &st) == 0) {
- off_t size;
-
- if (sections == 0)
- size = st.st_size;
- else
- size = pages * page_size();
-
- tsize += size;
-
- printf(" %4jd%% (%2d) %12jd: %s\n",
- (intmax_t) (sections && st.st_size ? size * 100 / st.st_size : 100),
- sections ? sections : 1,
- (intmax_t) size,
- path);
- } else {
- printf(" %4dp (%2d) %12s: %s (MISSING)\n",
- sections ? pages : -1,
- sections ? sections : 1,
- "???",
- path);
- missing++;
- }
-
- }
-
- printf("\nHOST: %s"
- "TYPE: %c\n"
- "MISSING: %d\n"
- "TOTAL: %zu\n",
- line,
- a,
- missing,
- tsize);
-
- return EXIT_SUCCESS;
-
-fail:
- return EXIT_FAILURE;
-}
diff --git a/src/readahead/readahead-collect.c b/src/readahead/readahead-collect.c
deleted file mode 100644
index 822a803a41..0000000000
--- a/src/readahead/readahead-collect.c
+++ /dev/null
@@ -1,650 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2010 Lennart Poettering
-
- 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 <errno.h>
-#include <inttypes.h>
-#include <fcntl.h>
-#include <linux/limits.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/select.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <linux/fanotify.h>
-#include <sys/signalfd.h>
-#include <sys/poll.h>
-#include <sys/mman.h>
-#include <linux/fs.h>
-#include <linux/fiemap.h>
-#include <sys/ioctl.h>
-#include <sys/vfs.h>
-#include <getopt.h>
-#include <sys/inotify.h>
-#include <math.h>
-
-#ifdef HAVE_LINUX_BTRFS_H
-#include <linux/btrfs.h>
-#endif
-
-#ifdef HAVE_FANOTIFY_INIT
-#include <sys/fanotify.h>
-#endif
-
-#include "systemd/sd-daemon.h"
-
-#include "missing.h"
-#include "util.h"
-#include "set.h"
-#include "ioprio.h"
-#include "readahead-common.h"
-#include "virt.h"
-
-/* fixme:
- *
- * - detect ssd on btrfs/lvm...
- * - read ahead directories
- * - gzip?
- * - remount rw?
- * - handle files where nothing is in mincore
- * - does ioprio_set work with fadvise()?
- */
-
-static ReadaheadShared *shared = NULL;
-static usec_t starttime;
-
-/* Avoid collisions with the NULL pointer */
-#define SECTOR_TO_PTR(s) ULONG_TO_PTR((s)+1)
-#define PTR_TO_SECTOR(p) (PTR_TO_ULONG(p)-1)
-
-static int btrfs_defrag(int fd) {
- struct btrfs_ioctl_vol_args data = { .fd = fd };
-
- return ioctl(fd, BTRFS_IOC_DEFRAG, &data);
-}
-
-static int pack_file(FILE *pack, const char *fn, bool on_btrfs) {
- struct stat st;
- void *start = MAP_FAILED;
- uint8_t *vec;
- uint32_t b, c;
- uint64_t inode;
- size_t l, pages;
- bool mapped;
- int r = 0, fd = -1, k;
-
- assert(pack);
- assert(fn);
-
- fd = open(fn, O_RDONLY|O_CLOEXEC|O_NOATIME|O_NOCTTY|O_NOFOLLOW);
- if (fd < 0) {
-
- if (errno == ENOENT)
- return 0;
-
- if (errno == EPERM || errno == EACCES)
- return 0;
-
- log_warning("open(%s) failed: %m", fn);
- r = -errno;
- goto finish;
- }
-
- k = file_verify(fd, fn, arg_file_size_max, &st);
- if (k <= 0) {
- r = k;
- goto finish;
- }
-
- if (on_btrfs)
- btrfs_defrag(fd);
-
- l = PAGE_ALIGN(st.st_size);
- start = mmap(NULL, l, PROT_READ, MAP_SHARED, fd, 0);
- if (start == MAP_FAILED) {
- log_warning("mmap(%s) failed: %m", fn);
- r = -errno;
- goto finish;
- }
-
- pages = l / page_size();
- vec = alloca0(pages);
- if (mincore(start, l, vec) < 0) {
- log_warning("mincore(%s) failed: %m", fn);
- r = -errno;
- goto finish;
- }
-
- fputs(fn, pack);
- fputc('\n', pack);
-
- /* Store the inode, so that we notice when the file is deleted */
- inode = (uint64_t) st.st_ino;
- fwrite(&inode, sizeof(inode), 1, pack);
-
- mapped = false;
- for (c = 0; c < pages; c++) {
- bool new_mapped = !!(vec[c] & 1);
-
- if (!mapped && new_mapped)
- b = c;
- else if (mapped && !new_mapped) {
- fwrite(&b, sizeof(b), 1, pack);
- fwrite(&c, sizeof(c), 1, pack);
-
- log_debug("%s: page %u to %u", fn, b, c);
- }
-
- mapped = new_mapped;
- }
-
- /* We don't write any range data if we should read the entire file */
- if (mapped && b > 0) {
- fwrite(&b, sizeof(b), 1, pack);
- fwrite(&c, sizeof(c), 1, pack);
-
- log_debug("%s: page %u to %u", fn, b, c);
- }
-
- /* End marker */
- b = 0;
- fwrite(&b, sizeof(b), 1, pack);
- fwrite(&b, sizeof(b), 1, pack);
-
-finish:
- if (start != MAP_FAILED)
- munmap(start, l);
-
- safe_close(fd);
-
- return r;
-}
-
-static unsigned long fd_first_block(int fd) {
- struct {
- struct fiemap fiemap;
- struct fiemap_extent extent;
- } data = {
- .fiemap.fm_length = ~0ULL,
- .fiemap.fm_extent_count = 1,
- };
-
- if (ioctl(fd, FS_IOC_FIEMAP, &data) < 0)
- return 0;
-
- if (data.fiemap.fm_mapped_extents <= 0)
- return 0;
-
- if (data.fiemap.fm_extents[0].fe_flags & FIEMAP_EXTENT_UNKNOWN)
- return 0;
-
- return (unsigned long) data.fiemap.fm_extents[0].fe_physical;
-}
-
-struct item {
- const char *path;
- unsigned long block;
- unsigned long bin;
-};
-
-static int qsort_compare(const void *a, const void *b) {
- const struct item *i, *j;
-
- i = a;
- j = b;
-
- /* sort by bin first */
- if (i->bin < j->bin)
- return -1;
- if (i->bin > j->bin)
- return 1;
-
- /* then sort by sector */
- if (i->block < j->block)
- return -1;
- if (i->block > j->block)
- return 1;
-
- return strcmp(i->path, j->path);
-}
-
-static int collect(const char *root) {
- enum {
- FD_FANOTIFY, /* Get the actual fs events */
- FD_SIGNAL,
- FD_INOTIFY, /* We get notifications to quit early via this fd */
- _FD_MAX
- };
- struct pollfd pollfd[_FD_MAX] = {};
- int fanotify_fd = -1, signal_fd = -1, inotify_fd = -1, r = 0;
- pid_t my_pid;
- Hashmap *files = NULL;
- Iterator i;
- char *p, *q;
- sigset_t mask;
- FILE *pack = NULL;
- char *pack_fn_new = NULL, *pack_fn = NULL;
- bool on_ssd, on_btrfs;
- struct statfs sfs;
- usec_t not_after;
- uint64_t previous_block_readahead;
- bool previous_block_readahead_set = false;
-
- assert(root);
-
- if (asprintf(&pack_fn, "%s/.readahead", root) < 0) {
- r = log_oom();
- goto finish;
- }
-
- starttime = now(CLOCK_MONOTONIC);
-
- /* If there's no pack file yet we lower the kernel readahead
- * so that mincore() is accurate. If there is a pack file
- * already we assume it is accurate enough so that kernel
- * readahead is never triggered. */
- previous_block_readahead_set =
- access(pack_fn, F_OK) < 0 &&
- block_get_readahead(root, &previous_block_readahead) >= 0 &&
- block_set_readahead(root, 8*1024) >= 0;
-
- if (ioprio_set(IOPRIO_WHO_PROCESS, getpid(), IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) < 0)
- log_warning("Failed to set IDLE IO priority class: %m");
-
- assert_se(sigemptyset(&mask) == 0);
- sigset_add_many(&mask, SIGINT, SIGTERM, -1);
- assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
-
- if ((signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC)) < 0) {
- log_error("signalfd(): %m");
- r = -errno;
- goto finish;
- }
-
- files = hashmap_new(&string_hash_ops);
- if (!files) {
- log_error("Failed to allocate set.");
- r = -ENOMEM;
- goto finish;
- }
-
- fanotify_fd = fanotify_init(FAN_CLOEXEC|FAN_NONBLOCK, O_RDONLY|O_LARGEFILE|O_CLOEXEC|O_NOATIME);
- if (fanotify_fd < 0) {
- log_error("Failed to create fanotify object: %m");
- r = -errno;
- goto finish;
- }
-
- if (fanotify_mark(fanotify_fd, FAN_MARK_ADD|FAN_MARK_MOUNT, FAN_OPEN, AT_FDCWD, root) < 0) {
- log_error("Failed to mark %s: %m", root);
- r = -errno;
- goto finish;
- }
-
- inotify_fd = open_inotify();
- if (inotify_fd < 0) {
- r = inotify_fd;
- goto finish;
- }
-
- not_after = now(CLOCK_MONOTONIC) + arg_timeout;
-
- my_pid = getpid();
-
- pollfd[FD_FANOTIFY].fd = fanotify_fd;
- pollfd[FD_FANOTIFY].events = POLLIN;
- pollfd[FD_SIGNAL].fd = signal_fd;
- pollfd[FD_SIGNAL].events = POLLIN;
- pollfd[FD_INOTIFY].fd = inotify_fd;
- pollfd[FD_INOTIFY].events = POLLIN;
-
- sd_notify(0,
- "READY=1\n"
- "STATUS=Collecting readahead data");
-
- log_debug("Collecting...");
-
- if (access("/run/systemd/readahead/cancel", F_OK) >= 0) {
- log_debug("Collection canceled");
- r = -ECANCELED;
- goto finish;
- }
-
- if (access("/run/systemd/readahead/done", F_OK) >= 0) {
- log_debug("Got termination request");
- goto done;
- }
-
- for (;;) {
- union {
- struct fanotify_event_metadata metadata;
- char buffer[4096];
- } data;
- ssize_t n;
- struct fanotify_event_metadata *m;
- usec_t t;
- int h;
-
- if (hashmap_size(files) > arg_files_max) {
- log_debug("Reached maximum number of read ahead files, ending collection.");
- break;
- }
-
- t = now(CLOCK_MONOTONIC);
- if (t >= not_after) {
- log_debug("Reached maximum collection time, ending collection.");
- break;
- }
-
- if ((h = poll(pollfd, _FD_MAX, (int) ((not_after - t) / USEC_PER_MSEC))) < 0) {
-
- if (errno == EINTR)
- continue;
-
- log_error("poll(): %m");
- r = -errno;
- goto finish;
- }
-
- if (h == 0) {
- log_debug("Reached maximum collection time, ending collection.");
- break;
- }
-
- if (pollfd[FD_SIGNAL].revents) {
- log_debug("Got signal.");
- break;
- }
-
- if (pollfd[FD_INOTIFY].revents) {
- uint8_t inotify_buffer[sizeof(struct inotify_event) + FILENAME_MAX];
- struct inotify_event *e;
-
- if ((n = read(inotify_fd, &inotify_buffer, sizeof(inotify_buffer))) < 0) {
- if (errno == EINTR || errno == EAGAIN)
- continue;
-
- log_error("Failed to read inotify event: %m");
- r = -errno;
- goto finish;
- }
-
- e = (struct inotify_event*) inotify_buffer;
- while (n > 0) {
- size_t step;
-
- if ((e->mask & IN_CREATE) && streq(e->name, "cancel")) {
- log_debug("Collection canceled");
- r = -ECANCELED;
- goto finish;
- }
-
- if ((e->mask & IN_CREATE) && streq(e->name, "done")) {
- log_debug("Got termination request");
- goto done;
- }
-
- step = sizeof(struct inotify_event) + e->len;
- assert(step <= (size_t) n);
-
- e = (struct inotify_event*) ((uint8_t*) e + step);
- n -= step;
- }
- }
-
- n = read(fanotify_fd, &data, sizeof(data));
- if (n < 0) {
-
- if (errno == EINTR || errno == EAGAIN)
- continue;
-
- /* fanotify sometimes returns EACCES on read()
- * where it shouldn't. For now let's just
- * ignore it here (which is safe), but
- * eventually this should be
- * dropped when the kernel is fixed.
- *
- * https://bugzilla.redhat.com/show_bug.cgi?id=707577 */
- if (errno == EACCES)
- continue;
-
- log_error("Failed to read event: %m");
- r = -errno;
- goto finish;
- }
-
- for (m = &data.metadata; FAN_EVENT_OK(m, n); m = FAN_EVENT_NEXT(m, n)) {
- char fn[sizeof("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
- int k;
-
- if (m->fd < 0)
- goto next_iteration;
-
- if (m->pid == my_pid)
- goto next_iteration;
-
- __sync_synchronize();
- if (m->pid == shared->replay)
- goto next_iteration;
-
- snprintf(fn, sizeof(fn), "/proc/self/fd/%i", m->fd);
- k = readlink_malloc(fn, &p);
- if (k >= 0) {
- if (startswith(p, "/tmp") ||
- endswith(p, " (deleted)") ||
- hashmap_get(files, p))
- /* Not interesting, or
- * already read */
- free(p);
- else {
- unsigned long ul;
- usec_t entrytime;
- struct item *entry;
-
- entry = new0(struct item, 1);
- if (!entry) {
- r = log_oom();
- goto finish;
- }
-
- ul = fd_first_block(m->fd);
-
- entrytime = now(CLOCK_MONOTONIC);
-
- entry->block = ul;
- entry->path = strdup(p);
- if (!entry->path) {
- free(entry);
- r = log_oom();
- goto finish;
- }
- entry->bin = (entrytime - starttime) / 2000000;
-
- k = hashmap_put(files, p, entry);
- if (k < 0) {
- log_warning("hashmap_put() failed: %s", strerror(-k));
- free(p);
- }
- }
-
- } else
- log_warning("readlink(%s) failed: %s", fn, strerror(-k));
-
- next_iteration:
- safe_close(m->fd);
- }
- }
-
-done:
- fanotify_fd = safe_close(fanotify_fd);
-
- log_debug("Writing Pack File...");
-
- on_ssd = fs_on_ssd(root) > 0;
- log_debug("On SSD: %s", yes_no(on_ssd));
-
- on_btrfs = statfs(root, &sfs) >= 0 && F_TYPE_EQUAL(sfs.f_type, BTRFS_SUPER_MAGIC);
- log_debug("On btrfs: %s", yes_no(on_btrfs));
-
- if (asprintf(&pack_fn_new, "%s/.readahead.new", root) < 0) {
- r = log_oom();
- goto finish;
- }
-
- pack = fopen(pack_fn_new, "we");
- if (!pack) {
- log_error("Failed to open pack file: %m");
- r = -errno;
- goto finish;
- }
-
- fputs(CANONICAL_HOST READAHEAD_PACK_FILE_VERSION, pack);
- putc(on_ssd ? 'S' : 'R', pack);
-
- if (on_ssd || on_btrfs) {
-
- /* On SSD or on btrfs, just write things out in the
- * order the files were accessed. */
-
- HASHMAP_FOREACH_KEY(q, p, files, i)
- pack_file(pack, p, on_btrfs);
- } else {
- unsigned n;
-
- /* On rotating media, order things by the block
- * numbers */
-
- log_debug("Ordering...");
-
- n = hashmap_size(files);
- if (n) {
- _cleanup_free_ struct item *ordered;
- struct item *j;
- unsigned k;
-
- ordered = new(struct item, n);
- if (!ordered) {
- r = log_oom();
- goto finish;
- }
-
- j = ordered;
- HASHMAP_FOREACH_KEY(q, p, files, i) {
- memcpy(j, q, sizeof(struct item));
- j++;
- }
-
- assert(ordered + n == j);
-
- qsort(ordered, n, sizeof(struct item), qsort_compare);
-
- for (k = 0; k < n; k++)
- pack_file(pack, ordered[k].path, on_btrfs);
- } else
- log_warning("No pack files");
- }
-
- log_debug("Finalizing...");
-
- fflush(pack);
-
- if (ferror(pack)) {
- log_error("Failed to write pack file.");
- r = -EIO;
- goto finish;
- }
-
- if (rename(pack_fn_new, pack_fn) < 0) {
- log_error("Failed to rename readahead file: %m");
- r = -errno;
- goto finish;
- }
-
- fclose(pack);
- pack = NULL;
-
- log_debug("Done.");
-
-finish:
- safe_close(fanotify_fd);
- safe_close(signal_fd);
- safe_close(inotify_fd);
-
- if (pack) {
- fclose(pack);
- unlink(pack_fn_new);
- }
- free(pack_fn_new);
- free(pack_fn);
-
- while ((p = hashmap_steal_first_key(files)))
- free(p);
-
- hashmap_free(files);
-
- if (previous_block_readahead_set) {
- uint64_t bytes;
-
- /* Restore the original kernel readahead setting if we
- * changed it, and nobody has overwritten it since
- * yet. */
- if (block_get_readahead(root, &bytes) >= 0 && bytes == 8*1024)
- block_set_readahead(root, previous_block_readahead);
- }
-
- return r;
-}
-
-int main_collect(const char *root) {
-
- if (!root)
- root = "/";
-
- /* Skip this step on read-only media. Note that we check the
- * underlying block device here, not he read-only flag of the
- * file system on top, since that one is most likely mounted
- * read-only anyway at boot, even if the underlying block
- * device is theoretically writable. */
- if (fs_on_read_only(root) > 0) {
- log_info("Disabling readahead collector due to read-only media.");
- return EXIT_SUCCESS;
- }
-
- if (!enough_ram()) {
- log_info("Disabling readahead collector due to low memory.");
- return EXIT_SUCCESS;
- }
-
- shared = shared_get();
- if (!shared)
- return EXIT_FAILURE;
-
- shared->collect = getpid();
- __sync_synchronize();
-
- if (collect(root) < 0)
- return EXIT_FAILURE;
-
- return EXIT_SUCCESS;
-}
diff --git a/src/readahead/readahead-common.c b/src/readahead/readahead-common.c
deleted file mode 100644
index 3ca48a7257..0000000000
--- a/src/readahead/readahead-common.c
+++ /dev/null
@@ -1,398 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2010 Lennart Poettering
-
- 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 <errno.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/sysinfo.h>
-#include <sys/inotify.h>
-#include <fcntl.h>
-#include <sys/mman.h>
-#include <unistd.h>
-
-#include "log.h"
-#include "readahead-common.h"
-#include "util.h"
-#include "missing.h"
-#include "fileio.h"
-#include "libudev.h"
-#include "udev-util.h"
-
-int file_verify(int fd, const char *fn, off_t file_size_max, struct stat *st) {
- assert(fd >= 0);
- assert(fn);
- assert(st);
-
- if (fstat(fd, st) < 0) {
- log_warning("fstat(%s) failed: %m", fn);
- return -errno;
- }
-
- if (!S_ISREG(st->st_mode)) {
- log_debug("Not preloading special file %s", fn);
- return 0;
- }
-
- if (st->st_size <= 0 || st->st_size > file_size_max) {
- assert_cc(sizeof(st->st_size) == 8);
- log_debug("Not preloading file %s with size out of bounds %"PRIu64,
- fn, st->st_size);
- return 0;
- }
-
- return 1;
-}
-
-int fs_on_ssd(const char *p) {
- struct stat st;
- _cleanup_udev_unref_ struct udev *udev = NULL;
- _cleanup_udev_device_unref_ struct udev_device *udev_device = NULL;
- struct udev_device *look_at = NULL;
- const char *devtype, *rotational, *model, *id;
- int r;
-
- assert(p);
-
- if (stat(p, &st) < 0)
- return -errno;
-
- if (major(st.st_dev) == 0) {
- _cleanup_fclose_ FILE *f = NULL;
- int mount_id;
- union file_handle_union h = { .handle.handle_bytes = MAX_HANDLE_SZ, };
-
- /* Might be btrfs, which exposes "ssd" as mount flag if it is on ssd.
- *
- * We first determine the mount ID here, if we can,
- * and then lookup the mount ID in mountinfo to find
- * the mount options. */
-
- r = name_to_handle_at(AT_FDCWD, p, &h.handle, &mount_id, AT_SYMLINK_FOLLOW);
- if (r < 0)
- return false;
-
- f = fopen("/proc/self/mountinfo", "re");
- if (!f)
- return false;
-
- for (;;) {
- char line[LINE_MAX], *e;
- _cleanup_free_ char *opts = NULL;
- int mid;
-
- if (!fgets(line, sizeof(line), f))
- return false;
-
- truncate_nl(line);
-
- if (sscanf(line, "%i", &mid) != 1)
- continue;
-
- if (mid != mount_id)
- continue;
-
- e = strstr(line, " - ");
- if (!e)
- continue;
-
- if (sscanf(e+3, "%*s %*s %ms", &opts) != 1)
- continue;
-
- if (streq(opts, "ssd") || startswith(opts, "ssd,") || endswith(opts, ",ssd") || strstr(opts, ",ssd,"))
- return true;
- }
-
- return false;
- }
-
- udev = udev_new();
- if (!udev)
- return -ENOMEM;
-
- udev_device = udev_device_new_from_devnum(udev, 'b', st.st_dev);
- if (!udev_device)
- return false;
-
- devtype = udev_device_get_property_value(udev_device, "DEVTYPE");
- if (devtype && streq(devtype, "partition"))
- look_at = udev_device_get_parent(udev_device);
- else
- look_at = udev_device;
-
- if (!look_at)
- return false;
-
- /* First, try high-level property */
- id = udev_device_get_property_value(look_at, "ID_SSD");
- if (id)
- return streq(id, "1");
-
- /* Second, try kernel attribute */
- rotational = udev_device_get_sysattr_value(look_at, "queue/rotational");
- if (rotational)
- return streq(rotational, "0");
-
- /* Finally, fallback to heuristics */
- look_at = udev_device_get_parent(look_at);
- if (!look_at)
- return false;
-
- model = udev_device_get_sysattr_value(look_at, "model");
- if (model)
- return !!strstr(model, "SSD");
-
- return false;
-}
-
-int fs_on_read_only(const char *p) {
- struct stat st;
- _cleanup_udev_unref_ struct udev *udev = NULL;
- _cleanup_udev_device_unref_ struct udev_device *udev_device = NULL;
- const char *read_only;
-
- assert(p);
-
- if (stat(p, &st) < 0)
- return -errno;
-
- if (major(st.st_dev) == 0)
- return false;
-
- udev = udev_new();
- if (!udev)
- return -ENOMEM;
-
- udev_device = udev_device_new_from_devnum(udev, 'b', st.st_dev);
- if (!udev_device)
- return false;
-
- read_only = udev_device_get_sysattr_value(udev_device, "ro");
- if (read_only)
- return streq(read_only, "1");
-
- return false;
-}
-
-bool enough_ram(void) {
- struct sysinfo si;
-
- assert_se(sysinfo(&si) >= 0);
-
- /* Enable readahead only with at least 128MB memory */
- return si.totalram > 127 * 1024*1024 / si.mem_unit;
-}
-
-static void mkdirs(void) {
- if (mkdir("/run/systemd", 0755) && errno != EEXIST)
- log_warning("Failed to create /run/systemd: %m");
- if (mkdir("/run/systemd/readahead", 0755) && errno != EEXIST)
- log_warning("Failed to create /run/systemd: %m");
-}
-
-int open_inotify(void) {
- int fd;
-
- fd = inotify_init1(IN_CLOEXEC|IN_NONBLOCK);
- if (fd < 0) {
- log_error("Failed to create inotify handle: %m");
- return -errno;
- }
-
- mkdirs();
-
- if (inotify_add_watch(fd, "/run/systemd/readahead", IN_CREATE) < 0) {
- log_error("Failed to watch /run/systemd/readahead: %m");
- safe_close(fd);
- return -errno;
- }
-
- return fd;
-}
-
-ReadaheadShared *shared_get(void) {
- _cleanup_close_ int fd = -1;
- ReadaheadShared *m = NULL;
-
- mkdirs();
-
- fd = open("/run/systemd/readahead/shared", O_CREAT|O_RDWR|O_CLOEXEC, 0644);
- if (fd < 0) {
- log_error("Failed to create shared memory segment: %m");
- return NULL;
- }
-
- if (ftruncate(fd, sizeof(ReadaheadShared)) < 0) {
- log_error("Failed to truncate shared memory segment: %m");
- return NULL;
- }
-
- m = mmap(NULL, sizeof(ReadaheadShared), PROT_WRITE|PROT_READ, MAP_SHARED, fd, 0);
- if (m == MAP_FAILED) {
- log_error("Failed to mmap shared memory segment: %m");
- return NULL;
- }
-
- return m;
-}
-
-/* We use 20K instead of the more human digestable 16K here. Why?
- Simply so that it is more unlikely that users end up picking this
- value too so that we can recognize better whether the user changed
- the value while we had it temporarily bumped. */
-#define BUMP_REQUEST_NR (20*1024u)
-
-int block_bump_request_nr(const char *p) {
- struct stat st;
- uint64_t u;
- char *ap = NULL, *line = NULL;
- int r;
- dev_t d;
-
- assert(p);
-
- if (stat(p, &st) < 0)
- return -errno;
-
- if (major(st.st_dev) == 0)
- return 0;
-
- d = st.st_dev;
- block_get_whole_disk(d, &d);
-
- if (asprintf(&ap, "/sys/dev/block/%u:%u/queue/nr_requests", major(d), minor(d)) < 0) {
- r= -ENOMEM;
- goto finish;
- }
-
- r = read_one_line_file(ap, &line);
- if (r < 0) {
- if (r == -ENOENT)
- r = 0;
- goto finish;
- }
-
- r = safe_atou64(line, &u);
- if (r >= 0 && u >= BUMP_REQUEST_NR) {
- r = 0;
- goto finish;
- }
-
- free(line);
- line = NULL;
-
- if (asprintf(&line, "%u", BUMP_REQUEST_NR) < 0) {
- r = -ENOMEM;
- goto finish;
- }
-
- r = write_string_file(ap, line);
- if (r < 0)
- goto finish;
-
- log_info("Bumped block_nr parameter of %u:%u to %u. This is a temporary hack and should be removed one day.", major(d), minor(d), BUMP_REQUEST_NR);
- r = 1;
-
-finish:
- free(ap);
- free(line);
-
- return r;
-}
-
-int block_get_readahead(const char *p, uint64_t *bytes) {
- struct stat st;
- char *ap = NULL, *line = NULL;
- int r;
- dev_t d;
- uint64_t u;
-
- assert(p);
- assert(bytes);
-
- if (stat(p, &st) < 0)
- return -errno;
-
- if (major(st.st_dev) == 0)
- return 0;
-
- d = st.st_dev;
- block_get_whole_disk(d, &d);
-
- if (asprintf(&ap, "/sys/dev/block/%u:%u/bdi/read_ahead_kb", major(d), minor(d)) < 0) {
- r = -ENOMEM;
- goto finish;
- }
-
- r = read_one_line_file(ap, &line);
- if (r < 0)
- goto finish;
-
- r = safe_atou64(line, &u);
- if (r < 0)
- goto finish;
-
- *bytes = u * 1024ULL;
-
-finish:
- free(ap);
- free(line);
-
- return r;
-}
-
-int block_set_readahead(const char *p, uint64_t bytes) {
- struct stat st;
- char *ap = NULL, *line = NULL;
- int r;
- dev_t d;
-
- assert(p);
- assert(bytes);
-
- if (stat(p, &st) < 0)
- return -errno;
-
- if (major(st.st_dev) == 0)
- return 0;
-
- d = st.st_dev;
- block_get_whole_disk(d, &d);
-
- if (asprintf(&ap, "/sys/dev/block/%u:%u/bdi/read_ahead_kb", major(d), minor(d)) < 0) {
- r = -ENOMEM;
- goto finish;
- }
-
- if (asprintf(&line, "%llu", bytes / 1024ULL) < 0) {
- r = -ENOMEM;
- goto finish;
- }
-
- r = write_string_file(ap, line);
- if (r < 0)
- goto finish;
-
-finish:
- free(ap);
- free(line);
-
- return r;
-}
diff --git a/src/readahead/readahead-common.h b/src/readahead/readahead-common.h
deleted file mode 100644
index b34f3aadd7..0000000000
--- a/src/readahead/readahead-common.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-#pragma once
-
-/***
- This file is part of systemd.
-
- Copyright 2010 Lennart Poettering
-
- 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 <sys/stat.h>
-#include <sys/types.h>
-
-#include "macro.h"
-#include "util.h"
-
-#define READAHEAD_FILE_SIZE_MAX (10*1024*1024)
-
-#define READAHEAD_PACK_FILE_VERSION ";VERSION=2\n"
-
-extern unsigned arg_files_max;
-extern off_t arg_file_size_max;
-extern usec_t arg_timeout;
-
-int file_verify(int fd, const char *fn, off_t file_size_max, struct stat *st);
-
-int fs_on_ssd(const char *p);
-int fs_on_read_only(const char *p);
-
-bool enough_ram(void);
-
-int open_inotify(void);
-
-typedef struct ReadaheadShared {
- pid_t collect;
- pid_t replay;
-} _packed_ ReadaheadShared;
-
-ReadaheadShared *shared_get(void);
-
-int block_bump_request_nr(const char *p);
-
-int block_get_readahead(const char *p, uint64_t *bytes);
-int block_set_readahead(const char *p, uint64_t bytes);
-
-int main_collect(const char *root);
-int main_replay(const char *root);
-int main_analyze(const char *pack_path);
diff --git a/src/readahead/readahead-replay.c b/src/readahead/readahead-replay.c
deleted file mode 100644
index f81e0fe55d..0000000000
--- a/src/readahead/readahead-replay.c
+++ /dev/null
@@ -1,281 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2010 Lennart Poettering
-
- 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 <errno.h>
-#include <inttypes.h>
-#include <fcntl.h>
-#include <linux/limits.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/select.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <getopt.h>
-#include <sys/inotify.h>
-
-#include "systemd/sd-daemon.h"
-
-#include "missing.h"
-#include "util.h"
-#include "set.h"
-#include "ioprio.h"
-#include "readahead-common.h"
-#include "virt.h"
-
-static ReadaheadShared *shared = NULL;
-
-static int unpack_file(FILE *pack) {
- _cleanup_close_ int fd = -1;
- char fn[PATH_MAX];
- bool any = false;
- struct stat st;
- uint64_t inode;
-
- assert(pack);
-
- if (!fgets(fn, sizeof(fn), pack))
- return 0;
-
- char_array_0(fn);
- truncate_nl(fn);
-
- fd = open(fn, O_RDONLY|O_CLOEXEC|O_NOATIME|O_NOCTTY|O_NOFOLLOW);
- if (fd < 0) {
- if (errno != ENOENT && errno != EPERM && errno != EACCES && errno != ELOOP)
- log_warning("open(%s) failed: %m", fn);
-
- } else if (file_verify(fd, fn, arg_file_size_max, &st) <= 0)
- fd = safe_close(fd);
-
- if (fread(&inode, sizeof(inode), 1, pack) != 1) {
- log_error("Premature end of pack file.");
- return -EIO;
- }
-
- if (fd >= 0) {
- /* If the inode changed the file got deleted, so just
- * ignore this entry */
- if (st.st_ino != (uint64_t) inode)
- fd = safe_close(fd);
- }
-
- for (;;) {
- uint32_t b, c;
-
- if (fread(&b, sizeof(b), 1, pack) != 1 ||
- fread(&c, sizeof(c), 1, pack) != 1) {
- log_error("Premature end of pack file.");
- return -EIO;
- }
-
- if (b == 0 && c == 0)
- break;
-
- if (c <= b) {
- log_error("Invalid pack file.");
- return -EIO;
- }
-
- log_debug("%s: page %u to %u", fn, b, c);
-
- any = true;
-
- if (fd >= 0) {
- if (posix_fadvise(fd, b * page_size(), (c - b) * page_size(), POSIX_FADV_WILLNEED) < 0) {
- log_warning("posix_fadvise() failed: %m");
- return -errno;
- }
- }
- }
-
- if (!any && fd >= 0) {
- /* if no range is encoded in the pack file this is
- * intended to mean that the whole file shall be
- * read */
-
- if (posix_fadvise(fd, 0, st.st_size, POSIX_FADV_WILLNEED) < 0) {
- log_warning("posix_fadvise() failed: %m");
- return -errno;
- }
- }
-
- return 0;
-}
-
-static int replay(const char *root) {
- _cleanup_close_ int inotify_fd = -1;
- _cleanup_free_ char *pack_fn = NULL;
- _cleanup_fclose_ FILE *pack = NULL;
- bool on_ssd, ready = false;
- char line[LINE_MAX];
- int prio, c;
-
- assert(root);
-
- block_bump_request_nr(root);
-
- if (asprintf(&pack_fn, "%s/.readahead", root) < 0)
- return log_oom();
-
- pack = fopen(pack_fn, "re");
- if (!pack) {
- if (errno == ENOENT) {
- log_debug("No pack file found.");
- return 0;
- }
-
- log_error("Failed to open pack file: %m");
- return -errno;
- }
-
- posix_fadvise(fileno(pack), 0, 0, POSIX_FADV_WILLNEED);
-
- inotify_fd = open_inotify();
- if (inotify_fd < 0)
- return inotify_fd;
-
- if (!fgets(line, sizeof(line), pack)) {
- log_error("Premature end of pack file.");
- return -EIO;
- }
-
- char_array_0(line);
-
- if (!streq(line, CANONICAL_HOST READAHEAD_PACK_FILE_VERSION)) {
- log_debug("Pack file host or version type mismatch.");
- goto done;
- }
-
- c = getc(pack);
- if (c == EOF) {
- log_debug("Premature end of pack file.");
- return -EIO;
- }
-
- /* We do not retest SSD here, so that we can start replaying
- * before udev is up.*/
- on_ssd = c == 'S';
- log_debug("On SSD: %s", yes_no(on_ssd));
-
- if (on_ssd)
- prio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0);
- else
- /* We are not using RT here, since we'd starve IO that
- we didn't record (which is for example blkid, since
- its disk accesses go directly to the block device and
- are thus not visible in fallocate) to death. However,
- we do ask for an IO prio that is slightly higher than
- the default (which is BE. 4) */
- prio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 2);
-
- if (ioprio_set(IOPRIO_WHO_PROCESS, getpid(), prio) < 0)
- log_warning("Failed to set IDLE IO priority class: %m");
-
- sd_notify(0, "STATUS=Replaying readahead data");
-
- log_debug("Replaying...");
-
- if (access("/run/systemd/readahead/noreplay", F_OK) >= 0) {
- log_debug("Got termination request");
- goto done;
- }
-
- while (!feof(pack) && !ferror(pack)) {
- uint8_t inotify_buffer[sizeof(struct inotify_event) + FILENAME_MAX];
- int k;
- ssize_t n;
-
- n = read(inotify_fd, &inotify_buffer, sizeof(inotify_buffer));
- if (n < 0) {
- if (errno != EINTR && errno != EAGAIN) {
- log_error("Failed to read inotify event: %m");
- return -errno;
- }
- } else {
- struct inotify_event *e = (struct inotify_event*) inotify_buffer;
-
- while (n > 0) {
- size_t step;
-
- if ((e->mask & IN_CREATE) && streq(e->name, "noreplay")) {
- log_debug("Got termination request");
- goto done;
- }
-
- step = sizeof(struct inotify_event) + e->len;
- assert(step <= (size_t) n);
-
- e = (struct inotify_event*) ((uint8_t*) e + step);
- n -= step;
- }
- }
-
- k = unpack_file(pack);
- if (k < 0)
- return k;
-
- if (!ready) {
- /* We delay the ready notification until we
- * queued at least one read */
- sd_notify(0, "READY=1");
- ready = true;
- }
- }
-
-done:
- if (ferror(pack)) {
- log_error("Failed to read pack file.");
- return -EIO;
- }
-
- if (!ready)
- sd_notify(0, "READY=1");
-
- log_debug("Done.");
- return 0;
-}
-
-int main_replay(const char *root) {
-
- if (!root)
- root = "/";
-
- if (!enough_ram()) {
- log_info("Disabling readahead replay due to low memory.");
- return EXIT_SUCCESS;
- }
-
- shared = shared_get();
- if (!shared)
- return EXIT_FAILURE;
-
- shared->replay = getpid();
- __sync_synchronize();
-
- if (replay(root) < 0)
- return EXIT_FAILURE;
-
- return EXIT_SUCCESS;
-}
diff --git a/src/readahead/readahead.c b/src/readahead/readahead.c
deleted file mode 100644
index 35176e9379..0000000000
--- a/src/readahead/readahead.c
+++ /dev/null
@@ -1,163 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2012 Lennart Poettering
-
- 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 <getopt.h>
-#include <stddef.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
-#include <string.h>
-
-#include "util.h"
-#include "def.h"
-#include "build.h"
-#include "readahead-common.h"
-
-unsigned arg_files_max = 16*1024;
-off_t arg_file_size_max = READAHEAD_FILE_SIZE_MAX;
-usec_t arg_timeout = 2*USEC_PER_MINUTE;
-
-static void help(void) {
- printf("%1$s [OPTIONS...] collect [DIRECTORY]\n\n"
- "Collect read-ahead data on early boot.\n\n"
- " -h --help Show this help\n"
- " --version Show package version\n"
- " --files-max=INT Maximum number of files to read ahead\n"
- " --file-size-max=BYTES Maximum size of files to read ahead\n"
- " --timeout=USEC Maximum time to spend collecting data\n"
- "\n\n"
- "%1$s [OPTIONS...] replay [DIRECTORY]\n\n"
- "Replay collected read-ahead data on early boot.\n\n"
- " -h --help Show this help\n"
- " --version Show package version\n"
- " --file-size-max=BYTES Maximum size of files to read ahead\n"
- "\n\n"
- "%1$s [OPTIONS...] analyze [PACK-FILE]\n\n"
- "Analyze collected read-ahead data.\n\n"
- " -h --help Show this help\n"
- " --version Show package version\n",
- program_invocation_short_name);
-}
-
-static int parse_argv(int argc, char *argv[]) {
-
- enum {
- ARG_VERSION = 0x100,
- ARG_FILES_MAX,
- ARG_FILE_SIZE_MAX,
- ARG_TIMEOUT
- };
-
- static const struct option options[] = {
- { "help", no_argument, NULL, 'h' },
- { "version", no_argument, NULL, ARG_VERSION },
- { "files-max", required_argument, NULL, ARG_FILES_MAX },
- { "file-size-max", required_argument, NULL, ARG_FILE_SIZE_MAX },
- { "timeout", required_argument, NULL, ARG_TIMEOUT },
- {}
- };
-
- int c;
-
- assert(argc >= 0);
- assert(argv);
-
- while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
-
- switch (c) {
-
- case 'h':
- help();
- return 0;
-
- case ARG_VERSION:
- puts(PACKAGE_STRING);
- puts(SYSTEMD_FEATURES);
- return 0;
-
- case ARG_FILES_MAX:
- if (safe_atou(optarg, &arg_files_max) < 0 || arg_files_max <= 0) {
- log_error("Failed to parse maximum number of files %s.", optarg);
- return -EINVAL;
- }
- break;
-
- case ARG_FILE_SIZE_MAX: {
- unsigned long long ull;
-
- if (safe_atollu(optarg, &ull) < 0 || ull <= 0) {
- log_error("Failed to parse maximum file size %s.", optarg);
- return -EINVAL;
- }
-
- arg_file_size_max = (off_t) ull;
- break;
- }
-
- case ARG_TIMEOUT:
- if (parse_sec(optarg, &arg_timeout) < 0 || arg_timeout <= 0) {
- log_error("Failed to parse timeout %s.", optarg);
- return -EINVAL;
- }
-
- break;
-
- case '?':
- return -EINVAL;
-
- default:
- assert_not_reached("Unhandled option");
- }
-
- if (optind != argc-1 &&
- optind != argc-2) {
- log_error("%s: wrong number of arguments.",
- program_invocation_short_name);
- return -EINVAL;
- }
-
- return 1;
-}
-
-int main(int argc, char *argv[]) {
- int r;
-
- log_set_target(LOG_TARGET_SAFE);
- log_parse_environment();
- log_open();
-
- umask(0022);
-
- r = parse_argv(argc, argv);
- if (r <= 0)
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
-
- if (streq(argv[optind], "collect"))
- return main_collect(argv[optind+1]);
- else if (streq(argv[optind], "replay"))
- return main_replay(argv[optind+1]);
- else if (streq(argv[optind], "analyze"))
- return main_analyze(argv[optind+1]);
-
- log_error("Unknown verb %s.", argv[optind]);
- return EXIT_FAILURE;
-}
diff --git a/src/readahead/sd-readahead.c b/src/readahead/sd-readahead.c
deleted file mode 100644
index 675d82cdd1..0000000000
--- a/src/readahead/sd-readahead.c
+++ /dev/null
@@ -1,89 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- Copyright 2010 Lennart Poettering
-
- Permission is hereby granted, free of charge, to any person
- obtaining a copy of this software and associated documentation files
- (the "Software"), to deal in the Software without restriction,
- including without limitation the rights to use, copy, modify, merge,
- publish, distribute, sublicense, and/or sell copies of the Software,
- and to permit persons to whom the Software is furnished to do so,
- subject to the following conditions:
-
- The above copyright notice and this permission notice shall be
- included in all copies or substantial portions of the Software.
-
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- SOFTWARE.
-***/
-
-#ifndef _GNU_SOURCE
-# define _GNU_SOURCE
-#endif
-
-#include <unistd.h>
-#include <errno.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <fcntl.h>
-#include <string.h>
-
-#include "sd-readahead.h"
-
-#if (__GNUC__ >= 4)
-# ifdef SD_EXPORT_SYMBOLS
-/* Export symbols */
-# define _sd_export_ __attribute__ ((visibility("default")))
-# else
-/* Don't export the symbols */
-# define _sd_export_ __attribute__ ((visibility("hidden")))
-# endif
-#else
-# define _sd_export_
-#endif
-
-static int touch(const char *path) {
-
-#if !defined(DISABLE_SYSTEMD) && defined(__linux__)
- int fd;
-
- mkdir("/run/systemd", 0755);
- mkdir("/run/systemd/readahead", 0755);
-
- fd = open(path, O_WRONLY|O_CREAT|O_CLOEXEC|O_NOCTTY, 0666);
- if (fd < 0)
- return -errno;
-
- for (;;) {
- if (close(fd) >= 0)
- break;
-
- if (errno != EINTR)
- return -errno;
- }
-
-#endif
- return 0;
-}
-
-_sd_export_ int sd_readahead(const char *action) {
-
- if (!action)
- return -EINVAL;
-
- if (strcmp(action, "cancel") == 0)
- return touch("/run/systemd/readahead/cancel");
- else if (strcmp(action, "done") == 0)
- return touch("/run/systemd/readahead/done");
- else if (strcmp(action, "noreplay") == 0)
- return touch("/run/systemd/readahead/noreplay");
-
- return -EINVAL;
-}
diff --git a/src/readahead/test-ssd.c b/src/readahead/test-ssd.c
deleted file mode 100644
index 808faf359c..0000000000
--- a/src/readahead/test-ssd.c
+++ /dev/null
@@ -1,41 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2014 Zbigniew Jędrzejewski-Szmek
-
- 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 "readahead-common.h"
-
-int main(int argc, char *argv[]) {
- int i;
-
- for (i = 1; i < argc; i++) {
- char *name = argv[i];
- int r;
-
- r = fs_on_ssd(name);
- if (r < 0) {
- log_error("%s: %s", name, strerror(-r));
- return EXIT_FAILURE;
- }
-
- log_info("%s: %s", name, r ? "SSD" : "---");
- }
-
- return EXIT_SUCCESS;
-}
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