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author | Kenny Root | 2010-07-27 14:58:23 -0500 |
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committer | Android (Google) Code Review | 2010-07-27 14:58:23 -0500 |
commit | 5a0adf95b1170d3d9ec91b0106662cd17514f0e4 (patch) | |
tree | bd7736b947c7734de74e82525201b43b57c60908 | |
parent | 53308d4cd5c4414402e979a6771f7ef3b35f5c2f (diff) | |
parent | 8b9b105bc7bf6428591d55462b3e727ba7504b29 (diff) | |
download | platform-system-core-5a0adf95b1170d3d9ec91b0106662cd17514f0e4.tar.gz platform-system-core-5a0adf95b1170d3d9ec91b0106662cd17514f0e4.tar.xz platform-system-core-5a0adf95b1170d3d9ec91b0106662cd17514f0e4.zip |
Merge "Add basic lsof command" into gingerbread
-rw-r--r-- | toolbox/Android.mk | 3 | ||||
-rw-r--r-- | toolbox/lsof.c | 223 |
2 files changed, 225 insertions, 1 deletions
diff --git a/toolbox/Android.mk b/toolbox/Android.mk index 93492764b..588dac0b2 100644 --- a/toolbox/Android.mk +++ b/toolbox/Android.mk | |||
@@ -53,7 +53,8 @@ TOOLS := \ | |||
53 | uptime \ | 53 | uptime \ |
54 | vmstat \ | 54 | vmstat \ |
55 | nandread \ | 55 | nandread \ |
56 | ionice | 56 | ionice \ |
57 | lsof | ||
57 | 58 | ||
58 | LOCAL_SRC_FILES:= \ | 59 | LOCAL_SRC_FILES:= \ |
59 | toolbox.c \ | 60 | toolbox.c \ |
diff --git a/toolbox/lsof.c b/toolbox/lsof.c new file mode 100644 index 000000000..99891dbf4 --- /dev/null +++ b/toolbox/lsof.c | |||
@@ -0,0 +1,223 @@ | |||
1 | /* | ||
2 | * Copyright (c) 2010, The Android Open Source Project | ||
3 | * All rights reserved. | ||
4 | * | ||
5 | * Redistribution and use in source and binary forms, with or without | ||
6 | * modification, are permitted provided that the following conditions | ||
7 | * are met: | ||
8 | * * Redistributions of source code must retain the above copyright | ||
9 | * notice, this list of conditions and the following disclaimer. | ||
10 | * * Redistributions in binary form must reproduce the above copyright | ||
11 | * notice, this list of conditions and the following disclaimer in | ||
12 | * the documentation and/or other materials provided with the | ||
13 | * distribution. | ||
14 | * * Neither the name of Google, Inc. nor the names of its contributors | ||
15 | * may be used to endorse or promote products derived from this | ||
16 | * software without specific prior written permission. | ||
17 | * | ||
18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
19 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
20 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | ||
21 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | ||
22 | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | ||
23 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | ||
24 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS | ||
25 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED | ||
26 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | ||
27 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT | ||
28 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||
29 | * SUCH DAMAGE. | ||
30 | */ | ||
31 | |||
32 | #include <dirent.h> | ||
33 | #include <errno.h> | ||
34 | #include <fcntl.h> | ||
35 | #include <libgen.h> | ||
36 | #include <stdio.h> | ||
37 | #include <stdlib.h> | ||
38 | #include <unistd.h> | ||
39 | |||
40 | #define BUF_MAX 1024 | ||
41 | #define CMD_DISPLAY_MAX 10 | ||
42 | |||
43 | struct pid_info_t { | ||
44 | pid_t pid; | ||
45 | |||
46 | char cmdline[CMD_DISPLAY_MAX]; | ||
47 | |||
48 | char path[PATH_MAX]; | ||
49 | ssize_t parent_length; | ||
50 | }; | ||
51 | |||
52 | void print_header() | ||
53 | { | ||
54 | printf("%-9s %5s %10s %4s %9s %18s %9s %10s %s\n", | ||
55 | "COMMAND", | ||
56 | "PID", | ||
57 | "USER", | ||
58 | "FD", | ||
59 | "TYPE", | ||
60 | "DEVICE", | ||
61 | "SIZE/OFF", | ||
62 | "NODE", | ||
63 | "NAME"); | ||
64 | } | ||
65 | |||
66 | void print_type(char *type, struct pid_info_t* info) | ||
67 | { | ||
68 | static ssize_t link_dest_size; | ||
69 | static char link_dest[PATH_MAX]; | ||
70 | |||
71 | strncat(info->path, type, sizeof(info->path)); | ||
72 | if ((link_dest_size = readlink(info->path, link_dest, sizeof(link_dest)-1)) < 0) { | ||
73 | if (errno == ENOENT) | ||
74 | goto out; | ||
75 | |||
76 | snprintf(link_dest, sizeof(link_dest), "%s (readlink: %s)", info->path, strerror(errno)); | ||
77 | } else { | ||
78 | link_dest[link_dest_size] = '\0'; | ||
79 | } | ||
80 | |||
81 | // Things that are just the root filesystem are uninteresting (we already know) | ||
82 | if (!strcmp(link_dest, "/")) | ||
83 | goto out; | ||
84 | |||
85 | printf("%-9s %5d %10s %4s %9s %18s %9s %10s %s\n", info->cmdline, info->pid, "???", type, | ||
86 | "???", "???", "???", "???", link_dest); | ||
87 | |||
88 | out: | ||
89 | info->path[info->parent_length] = '\0'; | ||
90 | } | ||
91 | |||
92 | // Prints out all file that have been memory mapped | ||
93 | void print_maps(struct pid_info_t* info) | ||
94 | { | ||
95 | FILE *maps; | ||
96 | char buffer[PATH_MAX + 100]; | ||
97 | |||
98 | size_t offset; | ||
99 | int major, minor; | ||
100 | char device[10]; | ||
101 | long int inode; | ||
102 | char file[PATH_MAX]; | ||
103 | |||
104 | strncat(info->path, "maps", sizeof(info->path)); | ||
105 | |||
106 | maps = fopen(info->path, "r"); | ||
107 | if (!maps) | ||
108 | goto out; | ||
109 | |||
110 | while (fscanf(maps, "%*x-%*x %*s %zx %5s %ld %s\n", &offset, device, &inode, | ||
111 | file) == 4) { | ||
112 | // We don't care about non-file maps | ||
113 | if (inode == 0 || !strcmp(device, "00:00")) | ||
114 | continue; | ||
115 | |||
116 | printf("%-9s %5d %10s %4s %9s %18s %9zd %10ld %s\n", info->cmdline, info->pid, "???", "mem", | ||
117 | "???", device, offset, inode, file); | ||
118 | } | ||
119 | |||
120 | fclose(maps); | ||
121 | |||
122 | out: | ||
123 | info->path[info->parent_length] = '\0'; | ||
124 | } | ||
125 | |||
126 | // Prints out all open file descriptors | ||
127 | void print_fds(struct pid_info_t* info) | ||
128 | { | ||
129 | static char* fd_path = "fd/"; | ||
130 | strncat(info->path, fd_path, sizeof(info->path)); | ||
131 | |||
132 | int previous_length = info->parent_length; | ||
133 | info->parent_length += strlen(fd_path); | ||
134 | |||
135 | DIR *dir = opendir(info->path); | ||
136 | if (dir == NULL) { | ||
137 | char msg[BUF_MAX]; | ||
138 | snprintf(msg, sizeof(msg), "%s (opendir: %s)", info->path, strerror(errno)); | ||
139 | printf("%-9s %5d %10s %4s %9s %18s %9s %10s %s\n", info->cmdline, info->pid, "???", "FDS", | ||
140 | "", "", "", "", msg); | ||
141 | goto out; | ||
142 | } | ||
143 | |||
144 | struct dirent* de; | ||
145 | while ((de = readdir(dir))) { | ||
146 | if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) | ||
147 | continue; | ||
148 | |||
149 | print_type(de->d_name, info); | ||
150 | } | ||
151 | closedir(dir); | ||
152 | |||
153 | out: | ||
154 | info->parent_length = previous_length; | ||
155 | info->path[info->parent_length] = '\0'; | ||
156 | } | ||
157 | |||
158 | void lsof_dumpinfo(pid_t pid) | ||
159 | { | ||
160 | int fd; | ||
161 | struct pid_info_t info; | ||
162 | info.pid = pid; | ||
163 | |||
164 | snprintf(info.path, sizeof(info.path), "/proc/%d/", pid); | ||
165 | |||
166 | info.parent_length = strlen(info.path); | ||
167 | |||
168 | // Read the command line information; each argument is terminated with NULL. | ||
169 | strncat(info.path, "cmdline", sizeof(info.path)); | ||
170 | fd = open(info.path, O_RDONLY); | ||
171 | if (fd < 0) { | ||
172 | fprintf(stderr, "Couldn't read %s\n", info.path); | ||
173 | return; | ||
174 | } | ||
175 | char cmdline[PATH_MAX]; | ||
176 | if (read(fd, cmdline, sizeof(cmdline)) < 0) { | ||
177 | fprintf(stderr, "Error reading cmdline: %s: %s\n", info.path, strerror(errno)); | ||
178 | close(fd); | ||
179 | return; | ||
180 | } | ||
181 | close(fd); | ||
182 | info.path[info.parent_length] = '\0'; | ||
183 | |||
184 | // We only want the basename of the cmdline | ||
185 | strncpy(info.cmdline, basename(cmdline), sizeof(info.cmdline)); | ||
186 | info.cmdline[sizeof(info.cmdline)-1] = '\0'; | ||
187 | |||
188 | // Read each of these symlinks | ||
189 | print_type("cwd", &info); | ||
190 | print_type("exe", &info); | ||
191 | print_type("root", &info); | ||
192 | |||
193 | print_fds(&info); | ||
194 | print_maps(&info); | ||
195 | } | ||
196 | |||
197 | int lsof_main(int argc, char *argv[]) | ||
198 | { | ||
199 | DIR *dir = opendir("/proc"); | ||
200 | if (dir == NULL) { | ||
201 | fprintf(stderr, "Couldn't open /proc\n"); | ||
202 | return -1; | ||
203 | } | ||
204 | |||
205 | print_header(); | ||
206 | |||
207 | struct dirent* de; | ||
208 | while ((de = readdir(dir))) { | ||
209 | if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) | ||
210 | continue; | ||
211 | |||
212 | // Only inspect directories that are PID numbers | ||
213 | char* endptr; | ||
214 | long int pid = strtol(de->d_name, &endptr, 10); | ||
215 | if (*endptr != '\0') | ||
216 | continue; | ||
217 | |||
218 | lsof_dumpinfo(pid); | ||
219 | } | ||
220 | closedir(dir); | ||
221 | |||
222 | return 0; | ||
223 | } | ||