2010-01-20 18:28:45 +01:00
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/*
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* builtin-buildid-cache.c
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*
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* Builtin buildid-cache command: Manages build-id cache
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*
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* Copyright (C) 2010, Red Hat Inc.
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* Copyright (C) 2010, Arnaldo Carvalho de Melo <acme@redhat.com>
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*/
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2013-10-14 15:57:29 +02:00
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#include <sys/types.h>
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#include <sys/time.h>
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#include <time.h>
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#include <dirent.h>
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#include <unistd.h>
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2010-01-20 18:28:45 +01:00
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#include "builtin.h"
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#include "perf.h"
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#include "util/cache.h"
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#include "util/debug.h"
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#include "util/header.h"
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2015-12-15 16:39:39 +01:00
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#include <subcmd/parse-options.h>
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2010-01-20 18:28:45 +01:00
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#include "util/strlist.h"
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2012-10-27 23:18:28 +02:00
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#include "util/build-id.h"
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2012-12-07 20:28:27 +01:00
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#include "util/session.h"
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2012-10-27 23:18:29 +02:00
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#include "util/symbol.h"
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2010-01-20 18:28:45 +01:00
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2013-10-14 15:57:29 +02:00
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static int build_id_cache__kcore_buildid(const char *proc_dir, char *sbuildid)
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{
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char root_dir[PATH_MAX];
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char *p;
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strlcpy(root_dir, proc_dir, sizeof(root_dir));
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p = strrchr(root_dir, '/');
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if (!p)
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return -1;
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*p = '\0';
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2015-08-15 13:42:59 +02:00
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return sysfs__sprintf_build_id(root_dir, sbuildid);
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2013-10-14 15:57:29 +02:00
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}
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static int build_id_cache__kcore_dir(char *dir, size_t sz)
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{
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2016-01-25 10:56:13 +01:00
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return fetch_current_timestamp(dir, sz);
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2013-10-14 15:57:29 +02:00
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}
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2014-01-29 15:14:44 +01:00
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static bool same_kallsyms_reloc(const char *from_dir, char *to_dir)
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{
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char from[PATH_MAX];
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char to[PATH_MAX];
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const char *name;
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u64 addr1 = 0, addr2 = 0;
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int i;
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scnprintf(from, sizeof(from), "%s/kallsyms", from_dir);
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scnprintf(to, sizeof(to), "%s/kallsyms", to_dir);
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for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) {
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addr1 = kallsyms__get_function_start(from, name);
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if (addr1)
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break;
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}
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if (name)
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addr2 = kallsyms__get_function_start(to, name);
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return addr1 == addr2;
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}
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2013-10-14 15:57:29 +02:00
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static int build_id_cache__kcore_existing(const char *from_dir, char *to_dir,
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size_t to_dir_sz)
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{
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char from[PATH_MAX];
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char to[PATH_MAX];
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2014-01-29 15:14:44 +01:00
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char to_subdir[PATH_MAX];
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2013-10-14 15:57:29 +02:00
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struct dirent *dent;
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int ret = -1;
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DIR *d;
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d = opendir(to_dir);
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if (!d)
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return -1;
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scnprintf(from, sizeof(from), "%s/modules", from_dir);
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while (1) {
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dent = readdir(d);
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if (!dent)
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break;
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if (dent->d_type != DT_DIR)
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continue;
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scnprintf(to, sizeof(to), "%s/%s/modules", to_dir,
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dent->d_name);
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2014-01-29 15:14:44 +01:00
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scnprintf(to_subdir, sizeof(to_subdir), "%s/%s",
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to_dir, dent->d_name);
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if (!compare_proc_modules(from, to) &&
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same_kallsyms_reloc(from_dir, to_subdir)) {
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strlcpy(to_dir, to_subdir, to_dir_sz);
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2013-10-14 15:57:29 +02:00
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ret = 0;
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break;
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}
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}
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closedir(d);
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return ret;
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}
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2015-02-10 10:18:51 +01:00
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static int build_id_cache__add_kcore(const char *filename, bool force)
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2013-10-14 15:57:29 +02:00
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{
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2015-07-15 11:14:28 +02:00
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char dir[32], sbuildid[SBUILD_ID_SIZE];
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2013-10-14 15:57:29 +02:00
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char from_dir[PATH_MAX], to_dir[PATH_MAX];
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char *p;
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strlcpy(from_dir, filename, sizeof(from_dir));
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p = strrchr(from_dir, '/');
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if (!p || strcmp(p + 1, "kcore"))
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return -1;
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*p = '\0';
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2015-08-15 13:42:59 +02:00
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if (build_id_cache__kcore_buildid(from_dir, sbuildid) < 0)
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2013-10-14 15:57:29 +02:00
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return -1;
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scnprintf(to_dir, sizeof(to_dir), "%s/[kernel.kcore]/%s",
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2015-02-10 10:18:51 +01:00
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buildid_dir, sbuildid);
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2013-10-14 15:57:29 +02:00
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2014-07-14 12:02:38 +02:00
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if (!force &&
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!build_id_cache__kcore_existing(from_dir, to_dir, sizeof(to_dir))) {
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2013-10-14 15:57:29 +02:00
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pr_debug("same kcore found in %s\n", to_dir);
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return 0;
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}
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if (build_id_cache__kcore_dir(dir, sizeof(dir)))
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return -1;
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scnprintf(to_dir, sizeof(to_dir), "%s/[kernel.kcore]/%s/%s",
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2015-02-10 10:18:51 +01:00
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buildid_dir, sbuildid, dir);
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2013-10-14 15:57:29 +02:00
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if (mkdir_p(to_dir, 0755))
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return -1;
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if (kcore_copy(from_dir, to_dir)) {
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/* Remove YYYYmmddHHMMSShh directory */
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if (!rmdir(to_dir)) {
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p = strrchr(to_dir, '/');
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if (p)
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*p = '\0';
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/* Try to remove buildid directory */
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if (!rmdir(to_dir)) {
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p = strrchr(to_dir, '/');
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if (p)
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*p = '\0';
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/* Try to remove [kernel.kcore] directory */
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rmdir(to_dir);
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}
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}
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return -1;
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}
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pr_debug("kcore added to build-id cache directory %s\n", to_dir);
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return 0;
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}
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2015-02-10 10:18:51 +01:00
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static int build_id_cache__add_file(const char *filename)
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2010-01-20 18:28:45 +01:00
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{
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2015-07-15 11:14:28 +02:00
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char sbuild_id[SBUILD_ID_SIZE];
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2010-01-20 18:28:45 +01:00
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u8 build_id[BUILD_ID_SIZE];
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int err;
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if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) {
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pr_debug("Couldn't read a build-id in %s\n", filename);
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return -1;
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}
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build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
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2015-02-10 10:18:51 +01:00
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err = build_id_cache__add_s(sbuild_id, filename,
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2012-09-10 18:50:19 +02:00
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false, false);
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2015-02-27 05:50:28 +01:00
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pr_debug("Adding %s %s: %s\n", sbuild_id, filename,
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err ? "FAIL" : "Ok");
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2010-01-20 18:28:45 +01:00
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return err;
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}
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2015-02-10 10:18:51 +01:00
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static int build_id_cache__remove_file(const char *filename)
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2010-01-20 18:28:45 +01:00
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{
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u8 build_id[BUILD_ID_SIZE];
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2015-07-15 11:14:28 +02:00
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char sbuild_id[SBUILD_ID_SIZE];
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2010-01-20 18:28:45 +01:00
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int err;
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if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) {
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pr_debug("Couldn't read a build-id in %s\n", filename);
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return -1;
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}
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build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
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2015-02-10 10:18:51 +01:00
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err = build_id_cache__remove_s(sbuild_id);
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2015-02-27 05:50:28 +01:00
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pr_debug("Removing %s %s: %s\n", sbuild_id, filename,
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err ? "FAIL" : "Ok");
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2010-01-20 18:28:45 +01:00
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return err;
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}
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2015-02-27 05:50:26 +01:00
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static int build_id_cache__purge_path(const char *pathname)
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{
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struct strlist *list;
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struct str_node *pos;
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int err;
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err = build_id_cache__list_build_ids(pathname, &list);
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if (err)
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goto out;
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strlist__for_each(pos, list) {
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err = build_id_cache__remove_s(pos->s);
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2015-02-27 05:50:28 +01:00
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pr_debug("Removing %s %s: %s\n", pos->s, pathname,
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err ? "FAIL" : "Ok");
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2015-02-27 05:50:26 +01:00
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if (err)
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break;
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}
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strlist__delete(list);
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out:
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2015-02-27 05:50:28 +01:00
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pr_debug("Purging %s: %s\n", pathname, err ? "FAIL" : "Ok");
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2015-02-27 05:50:26 +01:00
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return err;
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}
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2012-12-07 20:28:27 +01:00
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static bool dso__missing_buildid_cache(struct dso *dso, int parm __maybe_unused)
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{
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char filename[PATH_MAX];
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u8 build_id[BUILD_ID_SIZE];
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if (dso__build_id_filename(dso, filename, sizeof(filename)) &&
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filename__read_build_id(filename, build_id,
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sizeof(build_id)) != sizeof(build_id)) {
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if (errno == ENOENT)
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return false;
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2014-12-17 21:24:45 +01:00
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pr_warning("Problems with %s file, consider removing it from the cache\n",
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2012-12-07 20:28:27 +01:00
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filename);
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} else if (memcmp(dso->build_id, build_id, sizeof(dso->build_id))) {
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2014-12-17 21:24:45 +01:00
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pr_warning("Problems with %s file, consider removing it from the cache\n",
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2012-12-07 20:28:27 +01:00
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filename);
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}
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return true;
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}
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2014-08-12 08:40:36 +02:00
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static int build_id_cache__fprintf_missing(struct perf_session *session, FILE *fp)
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2012-12-07 20:28:27 +01:00
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{
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perf_session__fprintf_dsos_buildid(session, fp, dso__missing_buildid_cache, 0);
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return 0;
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}
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2015-02-10 10:18:51 +01:00
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static int build_id_cache__update_file(const char *filename)
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2013-02-07 10:02:11 +01:00
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{
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u8 build_id[BUILD_ID_SIZE];
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2015-07-15 11:14:28 +02:00
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char sbuild_id[SBUILD_ID_SIZE];
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2013-02-07 10:02:11 +01:00
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2015-02-26 07:54:40 +01:00
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int err = 0;
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2013-02-07 10:02:11 +01:00
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if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) {
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pr_debug("Couldn't read a build-id in %s\n", filename);
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return -1;
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}
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build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
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2015-02-26 07:54:40 +01:00
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if (build_id_cache__cached(sbuild_id))
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err = build_id_cache__remove_s(sbuild_id);
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2015-02-10 10:18:51 +01:00
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if (!err)
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err = build_id_cache__add_s(sbuild_id, filename, false, false);
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2015-02-27 05:50:28 +01:00
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pr_debug("Updating %s %s: %s\n", sbuild_id, filename,
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err ? "FAIL" : "Ok");
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2013-02-07 10:02:11 +01:00
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return err;
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}
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2012-10-01 20:20:58 +02:00
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int cmd_buildid_cache(int argc, const char **argv,
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const char *prefix __maybe_unused)
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2010-01-20 18:28:45 +01:00
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{
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struct strlist *list;
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struct str_node *pos;
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2012-12-07 20:28:27 +01:00
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int ret = 0;
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bool force = false;
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2012-10-01 20:20:58 +02:00
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char const *add_name_list_str = NULL,
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2012-12-07 20:28:27 +01:00
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*remove_name_list_str = NULL,
|
2015-02-27 05:50:26 +01:00
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*purge_name_list_str = NULL,
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2013-02-07 10:02:11 +01:00
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*missing_filename = NULL,
|
2013-10-14 15:57:29 +02:00
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*update_name_list_str = NULL,
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2014-12-01 20:06:27 +01:00
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*kcore_filename = NULL;
|
2014-08-14 04:22:49 +02:00
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char sbuf[STRERR_BUFSIZE];
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2013-02-07 10:02:11 +01:00
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|
2014-08-12 08:40:36 +02:00
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struct perf_data_file file = {
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.mode = PERF_DATA_MODE_READ,
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};
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struct perf_session *session = NULL;
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2012-10-01 20:20:58 +02:00
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const struct option buildid_cache_options[] = {
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OPT_STRING('a', "add", &add_name_list_str,
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"file list", "file(s) to add"),
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2013-10-14 15:57:29 +02:00
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OPT_STRING('k', "kcore", &kcore_filename,
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"file", "kcore file to add"),
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2012-10-01 20:20:58 +02:00
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OPT_STRING('r', "remove", &remove_name_list_str, "file list",
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"file(s) to remove"),
|
2015-02-27 05:50:26 +01:00
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OPT_STRING('p', "purge", &purge_name_list_str, "path list",
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"path(s) to remove (remove old caches too)"),
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2012-12-07 20:28:27 +01:00
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OPT_STRING('M', "missing", &missing_filename, "file",
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"to find missing build ids in the cache"),
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OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
|
2013-02-07 10:02:11 +01:00
|
|
|
OPT_STRING('u', "update", &update_name_list_str, "file list",
|
|
|
|
"file(s) to update"),
|
2012-10-01 20:20:58 +02:00
|
|
|
OPT_INCR('v', "verbose", &verbose, "be more verbose"),
|
|
|
|
OPT_END()
|
|
|
|
};
|
|
|
|
const char * const buildid_cache_usage[] = {
|
|
|
|
"perf buildid-cache [<options>]",
|
|
|
|
NULL
|
|
|
|
};
|
|
|
|
|
|
|
|
argc = parse_options(argc, argv, buildid_cache_options,
|
|
|
|
buildid_cache_usage, 0);
|
|
|
|
|
2015-02-27 05:50:31 +01:00
|
|
|
if (argc || (!add_name_list_str && !kcore_filename &&
|
|
|
|
!remove_name_list_str && !purge_name_list_str &&
|
|
|
|
!missing_filename && !update_name_list_str))
|
|
|
|
usage_with_options(buildid_cache_usage, buildid_cache_options);
|
|
|
|
|
2014-08-12 08:40:36 +02:00
|
|
|
if (missing_filename) {
|
|
|
|
file.path = missing_filename;
|
|
|
|
file.force = force;
|
|
|
|
|
|
|
|
session = perf_session__new(&file, false, NULL);
|
|
|
|
if (session == NULL)
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2014-08-12 08:40:45 +02:00
|
|
|
if (symbol__init(session ? &session->header.env : NULL) < 0)
|
2014-08-12 08:40:36 +02:00
|
|
|
goto out;
|
2012-10-01 20:20:58 +02:00
|
|
|
|
|
|
|
setup_pager();
|
2010-01-20 18:28:45 +01:00
|
|
|
|
|
|
|
if (add_name_list_str) {
|
2015-07-20 17:13:34 +02:00
|
|
|
list = strlist__new(add_name_list_str, NULL);
|
2010-01-20 18:28:45 +01:00
|
|
|
if (list) {
|
|
|
|
strlist__for_each(pos, list)
|
2015-02-10 10:18:51 +01:00
|
|
|
if (build_id_cache__add_file(pos->s)) {
|
2010-01-20 18:28:45 +01:00
|
|
|
if (errno == EEXIST) {
|
|
|
|
pr_debug("%s already in the cache\n",
|
|
|
|
pos->s);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
pr_warning("Couldn't add %s: %s\n",
|
2014-08-14 04:22:49 +02:00
|
|
|
pos->s, strerror_r(errno, sbuf, sizeof(sbuf)));
|
2010-01-20 18:28:45 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
strlist__delete(list);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (remove_name_list_str) {
|
2015-07-20 17:13:34 +02:00
|
|
|
list = strlist__new(remove_name_list_str, NULL);
|
2010-01-20 18:28:45 +01:00
|
|
|
if (list) {
|
|
|
|
strlist__for_each(pos, list)
|
2015-02-10 10:18:51 +01:00
|
|
|
if (build_id_cache__remove_file(pos->s)) {
|
2010-01-20 18:28:45 +01:00
|
|
|
if (errno == ENOENT) {
|
|
|
|
pr_debug("%s wasn't in the cache\n",
|
|
|
|
pos->s);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
pr_warning("Couldn't remove %s: %s\n",
|
2014-08-14 04:22:49 +02:00
|
|
|
pos->s, strerror_r(errno, sbuf, sizeof(sbuf)));
|
2010-01-20 18:28:45 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
strlist__delete(list);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-02-27 05:50:26 +01:00
|
|
|
if (purge_name_list_str) {
|
2015-07-20 17:13:34 +02:00
|
|
|
list = strlist__new(purge_name_list_str, NULL);
|
2015-02-27 05:50:26 +01:00
|
|
|
if (list) {
|
|
|
|
strlist__for_each(pos, list)
|
|
|
|
if (build_id_cache__purge_path(pos->s)) {
|
|
|
|
if (errno == ENOENT) {
|
|
|
|
pr_debug("%s wasn't in the cache\n",
|
|
|
|
pos->s);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
pr_warning("Couldn't remove %s: %s\n",
|
|
|
|
pos->s, strerror_r(errno, sbuf, sizeof(sbuf)));
|
|
|
|
}
|
|
|
|
|
|
|
|
strlist__delete(list);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-12-07 20:28:27 +01:00
|
|
|
if (missing_filename)
|
2014-08-12 08:40:36 +02:00
|
|
|
ret = build_id_cache__fprintf_missing(session, stdout);
|
2012-12-07 20:28:27 +01:00
|
|
|
|
2013-02-07 10:02:11 +01:00
|
|
|
if (update_name_list_str) {
|
2015-07-20 17:13:34 +02:00
|
|
|
list = strlist__new(update_name_list_str, NULL);
|
2013-02-07 10:02:11 +01:00
|
|
|
if (list) {
|
|
|
|
strlist__for_each(pos, list)
|
2015-02-10 10:18:51 +01:00
|
|
|
if (build_id_cache__update_file(pos->s)) {
|
2013-02-07 10:02:11 +01:00
|
|
|
if (errno == ENOENT) {
|
|
|
|
pr_debug("%s wasn't in the cache\n",
|
|
|
|
pos->s);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
pr_warning("Couldn't update %s: %s\n",
|
2014-08-14 04:22:49 +02:00
|
|
|
pos->s, strerror_r(errno, sbuf, sizeof(sbuf)));
|
2013-02-07 10:02:11 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
strlist__delete(list);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-02-10 10:18:51 +01:00
|
|
|
if (kcore_filename && build_id_cache__add_kcore(kcore_filename, force))
|
2013-10-14 15:57:29 +02:00
|
|
|
pr_warning("Couldn't add %s\n", kcore_filename);
|
|
|
|
|
2014-08-12 08:40:36 +02:00
|
|
|
out:
|
|
|
|
if (session)
|
|
|
|
perf_session__delete(session);
|
|
|
|
|
2012-12-07 20:28:27 +01:00
|
|
|
return ret;
|
2010-01-20 18:28:45 +01:00
|
|
|
}
|