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authorMarkus Gothe <nietzsche@lysator.liu.se>2017-04-18 17:25:49 (GMT)
committerDenys Vlasenko <vda.linux@googlemail.com>2017-04-18 17:26:26 (GMT)
commit9c7ee1439aded3f72fb314b516c0eb488076c179 (patch)
treeedfc40cbc91b8d26f3dcd5a50ca360244890ce59
parent10ad622dc2a9fb6563fab13719ead8baf15ff9e4 (diff)
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lsscsi: new applet
function old new delta lsscsi_main - 326 +326 applet_names 2613 2620 +7 applet_main 1512 1516 +4 applet_install_loc 189 190 +1 packed_usage 31566 31560 -6 ------------------------------------------------------------------------------ (add/remove: 2/0 grow/shrink: 3/1 up/down: 338/-6) Total: 332 bytes Signed-off-by: Markus Gothe <nietzsche@lysator.liu.se> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r--miscutils/lsscsi.c123
1 files changed, 123 insertions, 0 deletions
diff --git a/miscutils/lsscsi.c b/miscutils/lsscsi.c
new file mode 100644
index 0000000..1521680
--- /dev/null
+++ b/miscutils/lsscsi.c
@@ -0,0 +1,123 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * lsscsi implementation for busybox
+ *
+ * Copyright (C) 2017 Markus Gothe <nietzsche@lysator.liu.se>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
+//config:config LSSCSI
+//config: bool "lsscsi"
+//config: default y
+//config: #select PLATFORM_LINUX
+//config: help
+//config: lsscsi is a utility for displaying information about SCSI buses in the
+//config: system and devices connected to them.
+//config:
+//config: This version uses sysfs (/sys/bus/scsi/devices) only.
+
+//applet:IF_LSSCSI(APPLET(lsscsi, BB_DIR_USR_BIN, BB_SUID_DROP))
+
+//kbuild:lib-$(CONFIG_LSSCSI) += lsscsi.o
+
+//usage:#define lsscsi_trivial_usage NOUSAGE_STR
+//usage:#define lsscsi_full_usage ""
+
+#include "libbb.h"
+
+static char *get_line(const char *filename, char *buf, unsigned *bufsize_p)
+{
+ unsigned bufsize = *bufsize_p;
+ ssize_t sz;
+
+ if ((int)(bufsize - 2) <= 0)
+ return buf;
+
+ sz = open_read_close(filename, buf, bufsize - 2);
+ if (sz < 0)
+ sz = 0;
+ buf[sz] = '\0';
+ trim(buf);
+
+ sz = strlen(buf) + 1;
+ bufsize -= sz;
+ buf += sz;
+ buf[0] = '\0';
+
+ *bufsize_p = bufsize;
+ return buf;
+}
+
+int lsscsi_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int lsscsi_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
+{
+ struct dirent *de;
+ DIR *dir;
+
+ xchdir("/sys/bus/scsi/devices");
+
+ dir = xopendir(".");
+ while ((de = readdir(dir)) != NULL) {
+ char buf[256];
+ char *ptr;
+ unsigned bufsize;
+ const char *vendor;
+ const char *type_str;
+ const char *type_name;
+ const char *model;
+ const char *rev;
+ unsigned type;
+
+ if (!isdigit(de->d_name[0]))
+ continue;
+ if (!strchr(de->d_name, ':'))
+ continue;
+ if (chdir(de->d_name) != 0)
+ continue;
+
+ bufsize = sizeof(buf);
+ vendor = buf;
+ ptr = get_line("vendor", buf, &bufsize);
+ type_str = ptr;
+ ptr = get_line("type", ptr, &bufsize);
+ model = ptr;
+ ptr = get_line("model", ptr, &bufsize);
+ rev = ptr;
+ ptr = get_line("rev", ptr, &bufsize);
+
+ printf("[%s]\t", de->d_name);
+
+#define scsi_device_types \
+ "disk\0" "tape\0" "printer\0" "process\0" \
+ "worm\0" "\0" "scanner\0" "optical\0" \
+ "mediumx\0" "comms\0" "\0" "\0" \
+ "storage\0" "enclosu\0" "sim dsk\0" "opti rd\0" \
+ "bridge\0" "osd\0" "adi\0" "\0" \
+ "\0" "\0" "\0" "\0" \
+ "\0" "\0" "\0" "\0" \
+ "\0" "\0" "wlun\0" "no dev"
+ type = bb_strtou(type_str, NULL, 10);
+ if (errno
+ || type >= 0x20
+ || (type_name = nth_string(scsi_device_types, type))[0] == '\0'
+ ) {
+ printf("(%s)\t", type_str);
+ } else {
+ printf("%s\t", type_name);
+ }
+
+ printf("%s\t""%s\t""%s\n",
+ vendor,
+ model,
+ rev
+ );
+ /* TODO: also output device column, e.g. "/dev/sdX" */
+
+ xchdir("..");
+ }
+
+ if (ENABLE_FEATURE_CLEAN_UP)
+ closedir(dir);
+
+ return EXIT_SUCCESS;
+}