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Diffstat (limited to 'libpagemap/pm_process.c')
-rw-r--r--libpagemap/pm_process.c290
1 files changed, 0 insertions, 290 deletions
diff --git a/libpagemap/pm_process.c b/libpagemap/pm_process.c
deleted file mode 100644
index 1ab367d8..00000000
--- a/libpagemap/pm_process.c
+++ /dev/null
@@ -1,290 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <pagemap/pagemap.h>
-
-#include "pm_map.h"
-
-static int read_maps(pm_process_t *proc);
-
-#define MAX_FILENAME 64
-
-int pm_process_create(pm_kernel_t *ker, pid_t pid, pm_process_t **proc_out) {
- pm_process_t *proc;
- char filename[MAX_FILENAME];
- int error;
-
- if (!ker || !proc_out)
- return -1;
-
- proc = calloc(1, sizeof(*proc));
- if (!proc)
- return errno;
-
- proc->ker = ker;
- proc->pid = pid;
-
- error = snprintf(filename, MAX_FILENAME, "/proc/%d/pagemap", pid);
- if (error < 0 || error >= MAX_FILENAME) {
- error = (error < 0) ? (errno) : (-1);
- free(proc);
- return error;
- }
-
- proc->pagemap_fd = open(filename, O_RDONLY);
- if (proc->pagemap_fd < 0) {
- error = errno;
- free(proc);
- return error;
- }
-
- error = read_maps(proc);
- if (error) {
- free(proc);
- return error;
- }
-
- *proc_out = proc;
-
- return 0;
-}
-
-int pm_process_usage(pm_process_t *proc, pm_memusage_t *usage_out) {
- pm_memusage_t usage, map_usage;
- int error;
- int i;
-
- if (!proc || !usage_out)
- return -1;
-
- pm_memusage_zero(&usage);
-
- for (i = 0; i < proc->num_maps; i++) {
- error = pm_map_usage(proc->maps[i], &map_usage);
- if (error) return error;
-
- pm_memusage_add(&usage, &map_usage);
- }
-
- memcpy(usage_out, &usage, sizeof(pm_memusage_t));
-
- return 0;
-}
-
-int pm_process_pagemap_range(pm_process_t *proc,
- unsigned long low, unsigned long high,
- uint64_t **range_out, size_t *len) {
- int firstpage, numpages;
- uint64_t *range;
- off_t off;
- int error;
-
- if (!proc || (low >= high) || !range_out || !len)
- return -1;
-
- firstpage = low / proc->ker->pagesize;
- numpages = (high - low) / proc->ker->pagesize;
-
- range = malloc(numpages * sizeof(uint64_t));
- if (!range)
- return errno;
-
- off = lseek(proc->pagemap_fd, firstpage * sizeof(uint64_t), SEEK_SET);
- if (off == (off_t)-1) {
- error = errno;
- free(range);
- return error;
- }
- error = read(proc->pagemap_fd, (char*)range, numpages * sizeof(uint64_t));
- if (error < numpages * sizeof(uint64_t)) {
- error = (error < 0) ? errno : -1;
- free(range);
- return error;
- }
-
- *range_out = range;
- *len = numpages;
-
- return 0;
-}
-
-int pm_process_maps(pm_process_t *proc, pm_map_t ***maps_out, size_t *len) {
- pm_map_t **maps;
-
- if (!proc || !maps_out || !len)
- return -1;
-
- if (proc->num_maps) {
- maps = malloc(proc->num_maps * sizeof(pm_map_t*));
- if (!maps)
- return errno;
-
- memcpy(maps, proc->maps, proc->num_maps * sizeof(pm_map_t*));
-
- *maps_out = maps;
- } else {
- *maps_out = NULL;
- }
- *len = proc->num_maps;
-
- return 0;
-}
-
-int pm_process_workingset(pm_process_t *proc,
- pm_memusage_t *ws_out, int reset) {
- pm_memusage_t ws, map_ws;
- char filename[MAX_FILENAME];
- int fd;
- int i, j;
- int error;
-
- if (!proc)
- return -1;
-
- if (ws_out) {
- pm_memusage_zero(&ws);
- for (i = 0; i < proc->num_maps; i++) {
- error = pm_map_workingset(proc->maps[i], &map_ws);
- if (error) return error;
-
- pm_memusage_add(&ws, &map_ws);
- }
-
- memcpy(ws_out, &ws, sizeof(ws));
- }
-
- if (reset) {
- error = snprintf(filename, MAX_FILENAME, "/proc/%d/clear_refs",
- proc->pid);
- if (error < 0 || error >= MAX_FILENAME) {
- return (error < 0) ? (errno) : (-1);
- }
-
- fd = open(filename, O_WRONLY);
- if (fd < 0)
- return errno;
-
- write(fd, "1\n", strlen("1\n"));
-
- close(fd);
- }
-
- return 0;
-}
-
-int pm_process_destroy(pm_process_t *proc) {
- if (!proc)
- return -1;
-
- free(proc->maps);
- close(proc->pagemap_fd);
- free(proc);
-
- return 0;
-}
-
-#define INITIAL_MAPS 10
-#define MAX_LINE 256
-#define MAX_PERMS 5
-
-/*
- * #define FOO 123
- * S(FOO) => "123"
- */
-#define _S(n) #n
-#define S(n) _S(n)
-
-static int read_maps(pm_process_t *proc) {
- char filename[MAX_FILENAME];
- char line[MAX_LINE], name[MAX_LINE], perms[MAX_PERMS];
- FILE *maps_f;
- pm_map_t *map, **maps, **new_maps;
- int maps_count, maps_size;
- int error;
-
- if (!proc)
- return -1;
-
- maps = calloc(INITIAL_MAPS, sizeof(pm_map_t*));
- if (!maps)
- return errno;
- maps_count = 0; maps_size = INITIAL_MAPS;
-
- error = snprintf(filename, MAX_FILENAME, "/proc/%d/maps", proc->pid);
- if (error < 0 || error >= MAX_FILENAME)
- return (error < 0) ? (errno) : (-1);
-
- maps_f = fopen(filename, "r");
- if (!maps_f)
- return errno;
-
- while (fgets(line, MAX_LINE, maps_f)) {
- if (maps_count >= maps_size) {
- new_maps = realloc(maps, 2 * maps_size * sizeof(pm_map_t*));
- if (!new_maps) {
- error = errno;
- free(maps);
- fclose(maps_f);
- return error;
- }
- maps = new_maps;
- maps_size *= 2;
- }
-
- maps[maps_count] = map = calloc(1, sizeof(*map));
-
- map->proc = proc;
-
- sscanf(line, "%lx-%lx %s %lx %*s %*d %" S(MAX_LINE) "s",
- &map->start, &map->end, perms, &map->offset, name);
-
- map->name = malloc(strlen(name) + 1);
- if (!map->name) {
- error = errno;
- for (; maps_count > 0; maps_count--)
- pm_map_destroy(maps[maps_count]);
- free(maps);
- return error;
- }
- strcpy(map->name, name);
- if (perms[0] == 'r') map->flags |= PM_MAP_READ;
- if (perms[1] == 'w') map->flags |= PM_MAP_WRITE;
- if (perms[2] == 'x') map->flags |= PM_MAP_EXEC;
-
- maps_count++;
- }
-
- fclose(maps_f);
-
- new_maps = realloc(maps, maps_count * sizeof(pm_map_t*));
- if (maps_count && !new_maps) {
- error = errno;
- free(maps);
- return error;
- }
-
- proc->maps = new_maps;
- proc->num_maps = maps_count;
-
- return 0;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-29 22:15:26 +0000