1 /* vi: set sw=4 ts=4: */
3 * lsscsi implementation for busybox
5 * Copyright (C) 2017 Markus Gothe <nietzsche@lysator.liu.se>
7 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
10 //config: bool "lsscsi (2.4 kb)"
12 //config: #select PLATFORM_LINUX
14 //config: lsscsi is a utility for displaying information about SCSI buses in the
15 //config: system and devices connected to them.
17 //config: This version uses sysfs (/sys/bus/scsi/devices) only.
19 //applet:IF_LSSCSI(APPLET_NOEXEC(lsscsi, lsscsi, BB_DIR_USR_BIN, BB_SUID_DROP, lsscsi))
21 //kbuild:lib-$(CONFIG_LSSCSI) += lsscsi.o
23 //usage:#define lsscsi_trivial_usage NOUSAGE_STR
24 //usage:#define lsscsi_full_usage ""
28 static const char scsi_dir[] ALIGN1 = "/sys/bus/scsi/devices";
30 static char *get_line(const char *filename, char *buf, unsigned *bufsize_p)
32 unsigned bufsize = *bufsize_p;
35 if ((int)(bufsize - 2) <= 0)
38 sz = open_read_close(filename, buf, bufsize - 2);
43 sz = (trim(buf) - buf) + 1;
52 int lsscsi_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
53 int lsscsi_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
61 while ((de = readdir(dir)) != NULL) {
67 const char *type_name;
72 if (!isdigit(de->d_name[0]))
74 if (!strchr(de->d_name, ':'))
76 if (chdir(de->d_name) != 0)
79 bufsize = sizeof(buf);
81 ptr = get_line("vendor", buf, &bufsize);
83 ptr = get_line("type", ptr, &bufsize);
85 ptr = get_line("model", ptr, &bufsize);
87 ptr = get_line("rev", ptr, &bufsize);
89 printf("[%s]\t", de->d_name);
91 #define scsi_device_types \
92 "disk\0" "tape\0" "printer\0" "process\0" \
93 "worm\0" "\0" "scanner\0" "optical\0" \
94 "mediumx\0" "comms\0" "\0" "\0" \
95 "storage\0" "enclosu\0" "sim dsk\0" "opti rd\0" \
96 "bridge\0" "osd\0" "adi\0" "\0" \
99 "\0" "\0" "wlun\0" "no dev"
100 type = bb_strtou(type_str, NULL, 10);
103 || (type_name = nth_string(scsi_device_types, type))[0] == '\0'
105 printf("(%s)\t", type_str);
107 printf("%s\t", type_name);
110 printf("%s\t""%s\t""%s\n",
115 /* TODO: also output device column, e.g. "/dev/sdX" */
117 /* chdir("..") may not work as expected,
118 * since we might have followed a symlink.
123 if (ENABLE_FEATURE_CLEAN_UP)