2012-10-27 14:18:32 -07:00
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#include "symbol.h"
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#include "dso.h"
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2012-11-09 07:32:52 -07:00
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#include "machine.h"
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2012-10-27 14:18:32 -07:00
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#include "util.h"
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#include "debug.h"
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char dso__symtab_origin(const struct dso *dso)
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{
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static const char origin[] = {
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[DSO_BINARY_TYPE__KALLSYMS] = 'k',
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[DSO_BINARY_TYPE__VMLINUX] = 'v',
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[DSO_BINARY_TYPE__JAVA_JIT] = 'j',
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[DSO_BINARY_TYPE__DEBUGLINK] = 'l',
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[DSO_BINARY_TYPE__BUILD_ID_CACHE] = 'B',
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[DSO_BINARY_TYPE__FEDORA_DEBUGINFO] = 'f',
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[DSO_BINARY_TYPE__UBUNTU_DEBUGINFO] = 'u',
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[DSO_BINARY_TYPE__BUILDID_DEBUGINFO] = 'b',
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[DSO_BINARY_TYPE__SYSTEM_PATH_DSO] = 'd',
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[DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE] = 'K',
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[DSO_BINARY_TYPE__GUEST_KALLSYMS] = 'g',
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[DSO_BINARY_TYPE__GUEST_KMODULE] = 'G',
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[DSO_BINARY_TYPE__GUEST_VMLINUX] = 'V',
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};
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if (dso == NULL || dso->symtab_type == DSO_BINARY_TYPE__NOT_FOUND)
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return '!';
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return origin[dso->symtab_type];
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}
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int dso__binary_type_file(struct dso *dso, enum dso_binary_type type,
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char *root_dir, char *file, size_t size)
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{
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char build_id_hex[BUILD_ID_SIZE * 2 + 1];
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int ret = 0;
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switch (type) {
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case DSO_BINARY_TYPE__DEBUGLINK: {
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char *debuglink;
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strncpy(file, dso->long_name, size);
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debuglink = file + dso->long_name_len;
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while (debuglink != file && *debuglink != '/')
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debuglink--;
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if (*debuglink == '/')
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debuglink++;
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filename__read_debuglink(dso->long_name, debuglink,
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size - (debuglink - file));
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}
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break;
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case DSO_BINARY_TYPE__BUILD_ID_CACHE:
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/* skip the locally configured cache if a symfs is given */
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if (symbol_conf.symfs[0] ||
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(dso__build_id_filename(dso, file, size) == NULL))
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ret = -1;
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break;
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case DSO_BINARY_TYPE__FEDORA_DEBUGINFO:
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snprintf(file, size, "%s/usr/lib/debug%s.debug",
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symbol_conf.symfs, dso->long_name);
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break;
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case DSO_BINARY_TYPE__UBUNTU_DEBUGINFO:
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snprintf(file, size, "%s/usr/lib/debug%s",
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symbol_conf.symfs, dso->long_name);
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break;
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case DSO_BINARY_TYPE__BUILDID_DEBUGINFO:
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if (!dso->has_build_id) {
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ret = -1;
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break;
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}
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build_id__sprintf(dso->build_id,
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sizeof(dso->build_id),
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build_id_hex);
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snprintf(file, size,
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"%s/usr/lib/debug/.build-id/%.2s/%s.debug",
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symbol_conf.symfs, build_id_hex, build_id_hex + 2);
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break;
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case DSO_BINARY_TYPE__SYSTEM_PATH_DSO:
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snprintf(file, size, "%s%s",
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symbol_conf.symfs, dso->long_name);
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break;
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case DSO_BINARY_TYPE__GUEST_KMODULE:
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snprintf(file, size, "%s%s%s", symbol_conf.symfs,
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root_dir, dso->long_name);
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break;
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case DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE:
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snprintf(file, size, "%s%s", symbol_conf.symfs,
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dso->long_name);
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break;
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default:
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case DSO_BINARY_TYPE__KALLSYMS:
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case DSO_BINARY_TYPE__VMLINUX:
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case DSO_BINARY_TYPE__GUEST_KALLSYMS:
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case DSO_BINARY_TYPE__GUEST_VMLINUX:
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case DSO_BINARY_TYPE__JAVA_JIT:
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case DSO_BINARY_TYPE__NOT_FOUND:
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ret = -1;
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break;
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}
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return ret;
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}
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static int open_dso(struct dso *dso, struct machine *machine)
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{
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char *root_dir = (char *) "";
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char *name;
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int fd;
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name = malloc(PATH_MAX);
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if (!name)
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return -ENOMEM;
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if (machine)
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root_dir = machine->root_dir;
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if (dso__binary_type_file(dso, dso->data_type,
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root_dir, name, PATH_MAX)) {
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free(name);
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return -EINVAL;
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}
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fd = open(name, O_RDONLY);
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free(name);
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return fd;
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}
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int dso__data_fd(struct dso *dso, struct machine *machine)
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{
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static enum dso_binary_type binary_type_data[] = {
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DSO_BINARY_TYPE__BUILD_ID_CACHE,
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DSO_BINARY_TYPE__SYSTEM_PATH_DSO,
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DSO_BINARY_TYPE__NOT_FOUND,
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};
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int i = 0;
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if (dso->data_type != DSO_BINARY_TYPE__NOT_FOUND)
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return open_dso(dso, machine);
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do {
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int fd;
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dso->data_type = binary_type_data[i++];
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fd = open_dso(dso, machine);
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if (fd >= 0)
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return fd;
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} while (dso->data_type != DSO_BINARY_TYPE__NOT_FOUND);
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return -EINVAL;
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}
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static void
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dso_cache__free(struct rb_root *root)
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{
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struct rb_node *next = rb_first(root);
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while (next) {
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struct dso_cache *cache;
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cache = rb_entry(next, struct dso_cache, rb_node);
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next = rb_next(&cache->rb_node);
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rb_erase(&cache->rb_node, root);
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free(cache);
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}
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}
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static struct dso_cache*
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dso_cache__find(struct rb_root *root, u64 offset)
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{
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struct rb_node **p = &root->rb_node;
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struct rb_node *parent = NULL;
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struct dso_cache *cache;
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while (*p != NULL) {
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u64 end;
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parent = *p;
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cache = rb_entry(parent, struct dso_cache, rb_node);
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end = cache->offset + DSO__DATA_CACHE_SIZE;
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if (offset < cache->offset)
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p = &(*p)->rb_left;
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else if (offset >= end)
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p = &(*p)->rb_right;
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else
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return cache;
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}
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return NULL;
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}
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static void
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dso_cache__insert(struct rb_root *root, struct dso_cache *new)
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{
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struct rb_node **p = &root->rb_node;
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struct rb_node *parent = NULL;
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struct dso_cache *cache;
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u64 offset = new->offset;
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while (*p != NULL) {
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u64 end;
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parent = *p;
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cache = rb_entry(parent, struct dso_cache, rb_node);
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end = cache->offset + DSO__DATA_CACHE_SIZE;
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if (offset < cache->offset)
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p = &(*p)->rb_left;
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else if (offset >= end)
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p = &(*p)->rb_right;
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}
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rb_link_node(&new->rb_node, parent, p);
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rb_insert_color(&new->rb_node, root);
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}
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static ssize_t
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dso_cache__memcpy(struct dso_cache *cache, u64 offset,
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u8 *data, u64 size)
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{
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u64 cache_offset = offset - cache->offset;
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u64 cache_size = min(cache->size - cache_offset, size);
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memcpy(data, cache->data + cache_offset, cache_size);
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return cache_size;
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}
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static ssize_t
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dso_cache__read(struct dso *dso, struct machine *machine,
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u64 offset, u8 *data, ssize_t size)
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{
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struct dso_cache *cache;
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ssize_t ret;
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int fd;
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fd = dso__data_fd(dso, machine);
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if (fd < 0)
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return -1;
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do {
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u64 cache_offset;
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ret = -ENOMEM;
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cache = zalloc(sizeof(*cache) + DSO__DATA_CACHE_SIZE);
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if (!cache)
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break;
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cache_offset = offset & DSO__DATA_CACHE_MASK;
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ret = -EINVAL;
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if (-1 == lseek(fd, cache_offset, SEEK_SET))
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break;
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ret = read(fd, cache->data, DSO__DATA_CACHE_SIZE);
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if (ret <= 0)
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break;
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cache->offset = cache_offset;
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cache->size = ret;
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dso_cache__insert(&dso->cache, cache);
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ret = dso_cache__memcpy(cache, offset, data, size);
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} while (0);
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if (ret <= 0)
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free(cache);
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close(fd);
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return ret;
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}
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static ssize_t dso_cache_read(struct dso *dso, struct machine *machine,
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u64 offset, u8 *data, ssize_t size)
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{
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struct dso_cache *cache;
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cache = dso_cache__find(&dso->cache, offset);
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if (cache)
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return dso_cache__memcpy(cache, offset, data, size);
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else
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return dso_cache__read(dso, machine, offset, data, size);
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}
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ssize_t dso__data_read_offset(struct dso *dso, struct machine *machine,
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u64 offset, u8 *data, ssize_t size)
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{
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ssize_t r = 0;
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u8 *p = data;
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do {
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ssize_t ret;
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ret = dso_cache_read(dso, machine, offset, p, size);
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if (ret < 0)
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return ret;
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/* Reached EOF, return what we have. */
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if (!ret)
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break;
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BUG_ON(ret > size);
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r += ret;
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p += ret;
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offset += ret;
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size -= ret;
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} while (size);
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return r;
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}
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ssize_t dso__data_read_addr(struct dso *dso, struct map *map,
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struct machine *machine, u64 addr,
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u8 *data, ssize_t size)
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{
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u64 offset = map->map_ip(map, addr);
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return dso__data_read_offset(dso, machine, offset, data, size);
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}
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struct map *dso__new_map(const char *name)
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{
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struct map *map = NULL;
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struct dso *dso = dso__new(name);
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if (dso)
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map = map__new2(0, dso, MAP__FUNCTION);
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return map;
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}
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struct dso *dso__kernel_findnew(struct machine *machine, const char *name,
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const char *short_name, int dso_type)
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{
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/*
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* The kernel dso could be created by build_id processing.
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*/
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struct dso *dso = __dsos__findnew(&machine->kernel_dsos, name);
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/*
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* We need to run this in all cases, since during the build_id
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* processing we had no idea this was the kernel dso.
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*/
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if (dso != NULL) {
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dso__set_short_name(dso, short_name);
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dso->kernel = dso_type;
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}
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return dso;
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}
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void dso__set_long_name(struct dso *dso, char *name)
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{
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if (name == NULL)
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return;
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dso->long_name = name;
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dso->long_name_len = strlen(name);
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}
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void dso__set_short_name(struct dso *dso, const char *name)
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{
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if (name == NULL)
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return;
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dso->short_name = name;
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dso->short_name_len = strlen(name);
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}
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static void dso__set_basename(struct dso *dso)
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{
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dso__set_short_name(dso, basename(dso->long_name));
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}
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int dso__name_len(const struct dso *dso)
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{
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if (!dso)
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return strlen("[unknown]");
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if (verbose)
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return dso->long_name_len;
|
|
|
|
|
|
|
|
return dso->short_name_len;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool dso__loaded(const struct dso *dso, enum map_type type)
|
|
|
|
{
|
|
|
|
return dso->loaded & (1 << type);
|
|
|
|
}
|
|
|
|
|
|
|
|
bool dso__sorted_by_name(const struct dso *dso, enum map_type type)
|
|
|
|
{
|
|
|
|
return dso->sorted_by_name & (1 << type);
|
|
|
|
}
|
|
|
|
|
|
|
|
void dso__set_sorted_by_name(struct dso *dso, enum map_type type)
|
|
|
|
{
|
|
|
|
dso->sorted_by_name |= (1 << type);
|
|
|
|
}
|
|
|
|
|
|
|
|
struct dso *dso__new(const char *name)
|
|
|
|
{
|
|
|
|
struct dso *dso = calloc(1, sizeof(*dso) + strlen(name) + 1);
|
|
|
|
|
|
|
|
if (dso != NULL) {
|
|
|
|
int i;
|
|
|
|
strcpy(dso->name, name);
|
|
|
|
dso__set_long_name(dso, dso->name);
|
|
|
|
dso__set_short_name(dso, dso->name);
|
|
|
|
for (i = 0; i < MAP__NR_TYPES; ++i)
|
|
|
|
dso->symbols[i] = dso->symbol_names[i] = RB_ROOT;
|
|
|
|
dso->cache = RB_ROOT;
|
|
|
|
dso->symtab_type = DSO_BINARY_TYPE__NOT_FOUND;
|
|
|
|
dso->data_type = DSO_BINARY_TYPE__NOT_FOUND;
|
|
|
|
dso->loaded = 0;
|
|
|
|
dso->sorted_by_name = 0;
|
|
|
|
dso->has_build_id = 0;
|
|
|
|
dso->kernel = DSO_TYPE_USER;
|
|
|
|
dso->needs_swap = DSO_SWAP__UNSET;
|
|
|
|
INIT_LIST_HEAD(&dso->node);
|
|
|
|
}
|
|
|
|
|
|
|
|
return dso;
|
|
|
|
}
|
|
|
|
|
|
|
|
void dso__delete(struct dso *dso)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
for (i = 0; i < MAP__NR_TYPES; ++i)
|
|
|
|
symbols__delete(&dso->symbols[i]);
|
|
|
|
if (dso->sname_alloc)
|
|
|
|
free((char *)dso->short_name);
|
|
|
|
if (dso->lname_alloc)
|
|
|
|
free(dso->long_name);
|
|
|
|
dso_cache__free(&dso->cache);
|
|
|
|
free(dso);
|
|
|
|
}
|
|
|
|
|
|
|
|
void dso__set_build_id(struct dso *dso, void *build_id)
|
|
|
|
{
|
|
|
|
memcpy(dso->build_id, build_id, sizeof(dso->build_id));
|
|
|
|
dso->has_build_id = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool dso__build_id_equal(const struct dso *dso, u8 *build_id)
|
|
|
|
{
|
|
|
|
return memcmp(dso->build_id, build_id, sizeof(dso->build_id)) == 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void dso__read_running_kernel_build_id(struct dso *dso, struct machine *machine)
|
|
|
|
{
|
|
|
|
char path[PATH_MAX];
|
|
|
|
|
|
|
|
if (machine__is_default_guest(machine))
|
|
|
|
return;
|
|
|
|
sprintf(path, "%s/sys/kernel/notes", machine->root_dir);
|
|
|
|
if (sysfs__read_build_id(path, dso->build_id,
|
|
|
|
sizeof(dso->build_id)) == 0)
|
|
|
|
dso->has_build_id = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
int dso__kernel_module_get_build_id(struct dso *dso,
|
|
|
|
const char *root_dir)
|
|
|
|
{
|
|
|
|
char filename[PATH_MAX];
|
|
|
|
/*
|
|
|
|
* kernel module short names are of the form "[module]" and
|
|
|
|
* we need just "module" here.
|
|
|
|
*/
|
|
|
|
const char *name = dso->short_name + 1;
|
|
|
|
|
|
|
|
snprintf(filename, sizeof(filename),
|
|
|
|
"%s/sys/module/%.*s/notes/.note.gnu.build-id",
|
|
|
|
root_dir, (int)strlen(name) - 1, name);
|
|
|
|
|
|
|
|
if (sysfs__read_build_id(filename, dso->build_id,
|
|
|
|
sizeof(dso->build_id)) == 0)
|
|
|
|
dso->has_build_id = true;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool __dsos__read_build_ids(struct list_head *head, bool with_hits)
|
|
|
|
{
|
|
|
|
bool have_build_id = false;
|
|
|
|
struct dso *pos;
|
|
|
|
|
|
|
|
list_for_each_entry(pos, head, node) {
|
|
|
|
if (with_hits && !pos->hit)
|
|
|
|
continue;
|
|
|
|
if (pos->has_build_id) {
|
|
|
|
have_build_id = true;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if (filename__read_build_id(pos->long_name, pos->build_id,
|
|
|
|
sizeof(pos->build_id)) > 0) {
|
|
|
|
have_build_id = true;
|
|
|
|
pos->has_build_id = true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return have_build_id;
|
|
|
|
}
|
|
|
|
|
|
|
|
void dsos__add(struct list_head *head, struct dso *dso)
|
|
|
|
{
|
|
|
|
list_add_tail(&dso->node, head);
|
|
|
|
}
|
|
|
|
|
|
|
|
struct dso *dsos__find(struct list_head *head, const char *name)
|
|
|
|
{
|
|
|
|
struct dso *pos;
|
|
|
|
|
|
|
|
list_for_each_entry(pos, head, node)
|
|
|
|
if (strcmp(pos->long_name, name) == 0)
|
|
|
|
return pos;
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
struct dso *__dsos__findnew(struct list_head *head, const char *name)
|
|
|
|
{
|
|
|
|
struct dso *dso = dsos__find(head, name);
|
|
|
|
|
|
|
|
if (!dso) {
|
|
|
|
dso = dso__new(name);
|
|
|
|
if (dso != NULL) {
|
|
|
|
dsos__add(head, dso);
|
|
|
|
dso__set_basename(dso);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return dso;
|
|
|
|
}
|
|
|
|
|
|
|
|
size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp,
|
|
|
|
bool with_hits)
|
|
|
|
{
|
|
|
|
struct dso *pos;
|
|
|
|
size_t ret = 0;
|
|
|
|
|
|
|
|
list_for_each_entry(pos, head, node) {
|
|
|
|
if (with_hits && !pos->hit)
|
|
|
|
continue;
|
|
|
|
ret += dso__fprintf_buildid(pos, fp);
|
|
|
|
ret += fprintf(fp, " %s\n", pos->long_name);
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
size_t __dsos__fprintf(struct list_head *head, FILE *fp)
|
|
|
|
{
|
|
|
|
struct dso *pos;
|
|
|
|
size_t ret = 0;
|
|
|
|
|
|
|
|
list_for_each_entry(pos, head, node) {
|
|
|
|
int i;
|
|
|
|
for (i = 0; i < MAP__NR_TYPES; ++i)
|
|
|
|
ret += dso__fprintf(pos, i, fp);
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
size_t dso__fprintf_buildid(struct dso *dso, FILE *fp)
|
|
|
|
{
|
|
|
|
char sbuild_id[BUILD_ID_SIZE * 2 + 1];
|
|
|
|
|
|
|
|
build_id__sprintf(dso->build_id, sizeof(dso->build_id), sbuild_id);
|
|
|
|
return fprintf(fp, "%s", sbuild_id);
|
|
|
|
}
|
|
|
|
|
|
|
|
size_t dso__fprintf(struct dso *dso, enum map_type type, FILE *fp)
|
|
|
|
{
|
|
|
|
struct rb_node *nd;
|
|
|
|
size_t ret = fprintf(fp, "dso: %s (", dso->short_name);
|
|
|
|
|
|
|
|
if (dso->short_name != dso->long_name)
|
|
|
|
ret += fprintf(fp, "%s, ", dso->long_name);
|
|
|
|
ret += fprintf(fp, "%s, %sloaded, ", map_type__name[type],
|
2012-11-20 02:51:02 -07:00
|
|
|
dso__loaded(dso, type) ? "" : "NOT ");
|
2012-10-27 14:18:32 -07:00
|
|
|
ret += dso__fprintf_buildid(dso, fp);
|
|
|
|
ret += fprintf(fp, ")\n");
|
|
|
|
for (nd = rb_first(&dso->symbols[type]); nd; nd = rb_next(nd)) {
|
|
|
|
struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
|
|
|
|
ret += symbol__fprintf(pos, fp);
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|