1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2001, 2002 Cluster File Systems, Inc.
6 * This file is part of Portals, http://www.sf.net/projects/lustre/
8 * Portals is free software; you can redistribute it and/or
9 * modify it under the terms of version 2 of the GNU General Public
10 * License as published by the Free Software Foundation.
12 * Portals is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Portals; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 #define __USE_FILE_OFFSET64
25 #include <libcfs/libcfsutil.h>
27 #include <lnet/api-support.h>
28 #include <lnet/lnetctl.h>
30 static ioc_handler_t do_ioctl; /* forward ref */
31 static ioc_handler_t *current_ioc_handler = &do_ioctl;
34 const char * dev_name;
40 static struct ioc_dev ioc_dev_list[10];
51 set_ioc_handler (ioc_handler_t *handler)
54 current_ioc_handler = do_ioctl;
56 current_ioc_handler = handler;
59 /* Catamount has no <linux/kdev_t.h>, so just define it here */
61 # define MKDEV(a,b) (((a) << 8) | (b))
65 open_ioc_dev(int dev_id)
67 const char * dev_name;
70 dev_id >= sizeof(ioc_dev_list) / sizeof(ioc_dev_list[0]))
73 dev_name = ioc_dev_list[dev_id].dev_name;
74 if (dev_name == NULL) {
75 fprintf(stderr, "unknown device id: %d\n", dev_id);
79 if (ioc_dev_list[dev_id].dev_fd < 0) {
80 int fd = open(dev_name, O_RDWR);
82 /* Make the /dev/ node if we need to */
83 if (fd < 0 && errno == ENOENT) {
85 S_IFCHR|S_IWUSR|S_IRUSR,
86 MKDEV(ioc_dev_list[dev_id].dev_major,
87 ioc_dev_list[dev_id].dev_minor)) == 0)
88 fd = open(dev_name, O_RDWR);
90 fprintf(stderr, "mknod %s failed: %s\n",
91 dev_name, strerror(errno));
95 fprintf(stderr, "opening %s failed: %s\n"
96 "hint: the kernel modules may not be loaded\n",
97 dev_name, strerror(errno));
100 ioc_dev_list[dev_id].dev_fd = fd;
103 return ioc_dev_list[dev_id].dev_fd;
108 do_ioctl(int dev_id, unsigned int opc, void *buf)
112 fd = open_ioc_dev(dev_id);
116 rc = ioctl(fd, opc, buf);
126 if (!dump_filename) {
127 fprintf(stderr, "no dump filename\n");
129 fp = fopen(dump_filename, "a");
134 * The dump file should start with a description of which devices are
135 * used, but for now it will assumed whatever app reads the file will
136 * know what to do. */
138 dump(int dev_id, unsigned int opc, void *buf)
141 struct dump_hdr dump_hdr;
142 struct libcfs_ioctl_hdr * ioc_hdr = (struct libcfs_ioctl_hdr *) buf;
145 printf("dumping opc %x to %s\n", opc, dump_filename);
148 dump_hdr.magic = 0xdeadbeef;
149 dump_hdr.dev_id = dev_id;
152 fp = get_dump_file();
154 fprintf(stderr, "%s: %s\n", dump_filename,
159 rc = fwrite(&dump_hdr, sizeof(dump_hdr), 1, fp);
161 rc = fwrite(buf, ioc_hdr->ioc_len, 1, fp);
164 fprintf(stderr, "%s: %s\n", dump_filename,
172 /* register a device to send ioctls to. */
174 register_ioc_dev(int dev_id, const char * dev_name, int major, int minor)
178 dev_id >= sizeof(ioc_dev_list) / sizeof(ioc_dev_list[0]))
181 unregister_ioc_dev(dev_id);
183 ioc_dev_list[dev_id].dev_name = dev_name;
184 ioc_dev_list[dev_id].dev_fd = -1;
185 ioc_dev_list[dev_id].dev_major = major;
186 ioc_dev_list[dev_id].dev_minor = minor;
192 unregister_ioc_dev(int dev_id)
196 dev_id >= sizeof(ioc_dev_list) / sizeof(ioc_dev_list[0]))
198 if (ioc_dev_list[dev_id].dev_name != NULL &&
199 ioc_dev_list[dev_id].dev_fd >= 0)
200 close(ioc_dev_list[dev_id].dev_fd);
202 ioc_dev_list[dev_id].dev_name = NULL;
203 ioc_dev_list[dev_id].dev_fd = -1;
206 /* If this file is set, then all ioctl buffers will be
207 appended to the file. */
209 set_ioctl_dump(char * file)
214 dump_filename = strdup(file);
215 if (dump_filename == NULL)
218 set_ioc_handler(&dump);
223 l_ioctl(int dev_id, unsigned int opc, void *buf)
225 return current_ioc_handler(dev_id, opc, buf);
228 /* Read an ioctl dump file, and call the ioc_func for each ioctl buffer
229 * in the file. For example:
231 * parse_dump("lctl.dump", l_ioctl);
233 * Note: if using l_ioctl, then you also need to register_ioc_dev() for
234 * each device used in the dump.
237 parse_dump(char * dump_file, ioc_handler_t ioc_func)
241 char *start, *buf, *end;
250 fd = open(dump_file, O_RDONLY);
252 fprintf(stderr, "couldn't open %s: %s\n", dump_file,
257 if (fstat(fd, &st)) {
258 perror("stat fails");
262 if (st.st_size < 1) {
263 fprintf(stderr, "KML is empty\n");
267 start = buf = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE , fd, 0);
268 end = start + st.st_size;
270 if (start == MAP_FAILED) {
271 fprintf(stderr, "can't create file mapping\n");
275 fd = CreateFile(dump_file, GENERIC_READ, FILE_SHARE_READ, NULL,
276 OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
277 size = GetFileSize(fd, NULL);
279 fprintf(stderr, "KML is empty\n");
283 hmap = CreateFileMapping(fd, NULL, PAGE_READONLY, 0,0, NULL);
284 start = buf = MapViewOfFile(hmap, FILE_MAP_READ, 0, 0, 0);
288 fprintf(stderr, "can't create file mapping\n");
291 #endif /* __CYGWIN__ */
294 struct dump_hdr *dump_hdr = (struct dump_hdr *) buf;
295 struct libcfs_ioctl_hdr * data;
301 data = (struct libcfs_ioctl_hdr *) (buf + sizeof(*dump_hdr));
302 if (buf + data->ioc_len > end ) {
303 fprintf(stderr, "dump file overflow, %p + %d > %p\n", buf,
308 printf ("dump_hdr: %lx data: %lx\n",
309 (unsigned long)dump_hdr - (unsigned long)buf, (unsigned long)data - (unsigned long)buf);
311 printf("%d: opcode %x len: %d ver: %x ", line, dump_hdr->opc,
312 data->ioc_len, data->ioc_version);
315 memcpy(tmp, data, data->ioc_len);
317 rc = ioc_func(dump_hdr->dev_id, dump_hdr->opc, tmp);
319 printf("failed: %d\n", rc);
323 buf += data->ioc_len + sizeof(*dump_hdr);
327 munmap(start, end - start);
329 UnmapViewOfFile(start);
337 jt_ioc_dump(int argc, char **argv)
340 fprintf(stderr, "usage: %s [hostname]\n", argv[0]);
343 printf("setting dumpfile to: %s\n", argv[1]);
345 set_ioctl_dump(argv[1]);
349 int libcfs_ioctl_pack(struct libcfs_ioctl_data *data, char **pbuf,
353 struct libcfs_ioctl_data *overlay;
354 data->ioc_len = libcfs_ioctl_packlen(data);
355 data->ioc_version = LIBCFS_IOCTL_VERSION;
357 if (*pbuf && libcfs_ioctl_packlen(data) > max)
360 *pbuf = malloc(data->ioc_len);
364 overlay = (struct libcfs_ioctl_data *)*pbuf;
365 memcpy(*pbuf, data, sizeof(*data));
367 ptr = overlay->ioc_bulk;
368 if (data->ioc_inlbuf1)
369 LOGL(data->ioc_inlbuf1, data->ioc_inllen1, ptr);
370 if (data->ioc_inlbuf2)
371 LOGL(data->ioc_inlbuf2, data->ioc_inllen2, ptr);
372 if (libcfs_ioctl_is_invalid(overlay))