/*- * Copyright (c) 2000 Kelly Yancey * Derived from work done by Julian Elischer , 1993, and Peter Dufault , 1994. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer, * without modification, immediately at the beginning of the file. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * $FreeBSD: src/sbin/camcontrol/modeedit.c,v 1.5.2.2 2003/01/08 17:55:02 njl Exp $ * $DragonFly: src/sbin/camcontrol/modeedit.c,v 1.3 2005/01/11 23:58:55 cpressey Exp $ */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "camcontrol.h" int verbose = 0; #define DEFAULT_SCSI_MODE_DB "/usr/share/misc/scsi_modes" #define DEFAULT_EDITOR "vi" #define MAX_FORMAT_SPEC 4096 /* Max CDB format specifier. */ #define MAX_PAGENUM_LEN 10 /* Max characters in page num. */ #define MAX_PAGENAME_LEN 64 /* Max characters in page name. */ #define PAGEDEF_START '{' /* Page definition delimiter. */ #define PAGEDEF_END '}' /* Page definition delimiter. */ #define PAGENAME_START '"' /* Page name delimiter. */ #define PAGENAME_END '"' /* Page name delimiter. */ #define PAGEENTRY_END ';' /* Page entry terminator (optional). */ #define MAX_COMMAND_SIZE 255 /* Mode/Log sense data buffer size. */ #define PAGE_CTRL_SHIFT 6 /* Bit offset to page control field. */ /* Macros for working with mode pages. */ #define MODE_PAGE_HEADER(mh) \ (struct scsi_mode_page_header *)find_mode_page_6(mh) #define MODE_PAGE_DATA(mph) \ (u_int8_t *)(mph) + sizeof(struct scsi_mode_page_header) struct editentry { STAILQ_ENTRY(editentry) link; char *name; char type; int editable; int size; union { int ivalue; char *svalue; } value; }; STAILQ_HEAD(, editentry) editlist; /* List of page entries. */ int editlist_changed = 0; /* Whether any entries were changed. */ struct pagename { SLIST_ENTRY(pagename) link; int pagenum; char *name; }; SLIST_HEAD(, pagename) namelist; /* Page number to name mappings. */ static char format[MAX_FORMAT_SPEC]; /* Buffer for scsi cdb format def. */ static FILE *edit_file = NULL; /* File handle for edit file. */ static char edit_path[] = "/tmp/camXXXXXX"; /* Function prototypes. */ static void editentry_create(void *, int, void *, int, char *); static void editentry_update(void *, int, void *, int, char *); static int editentry_save(void *, char *); static struct editentry *editentry_lookup(char *); static int editentry_set(char *, char *, int); static void editlist_populate(struct cam_device *, int, int, int, int, int); static void editlist_save(struct cam_device *, int, int, int, int, int); static void nameentry_create(int, char *); static struct pagename *nameentry_lookup(int); static int load_format(const char *, int); static int modepage_write(FILE *, int); static int modepage_read(FILE *); static void modepage_edit(void); static void modepage_dump(struct cam_device *, int, int, int, int, int); static void cleanup_editfile(void); #define returnerr(code) do { \ errno = code; \ return (-1); \ } while (0) #define RTRIM(string) do { \ int _length; \ while (isspace(string[_length = strlen(string) - 1])) \ string[_length] = '\0'; \ } while (0) static void editentry_create(void *hook __unused, int letter, void *arg, int count, char *name) { struct editentry *newentry; /* Buffer to hold new entry. */ /* Allocate memory for the new entry and a copy of the entry name. */ if ((newentry = malloc(sizeof(struct editentry))) == NULL || (newentry->name = strdup(name)) == NULL) err(EX_OSERR, NULL); /* Trim any trailing whitespace for the entry name. */ RTRIM(newentry->name); newentry->editable = (arg != NULL); newentry->type = letter; newentry->size = count; /* Placeholder; not accurate. */ newentry->value.svalue = NULL; STAILQ_INSERT_TAIL(&editlist, newentry, link); } static void editentry_update(void *hook __unused, int letter, void *arg, int count, char *name) { struct editentry *dest; /* Buffer to hold entry to update. */ dest = editentry_lookup(name); assert(dest != NULL); dest->type = letter; dest->size = count; /* We get the real size now. */ switch (dest->type) { case 'i': /* Byte-sized integral type. */ case 'b': /* Bit-sized integral types. */ case 't': dest->value.ivalue = (intptr_t)arg; break; case 'c': /* Character array. */ case 'z': /* Null-padded string. */ editentry_set(name, (char *)arg, 0); break; default: ; /* NOTREACHED */ } } static int editentry_save(void *hook __unused, char *name) { struct editentry *src; /* Entry value to save. */ src = editentry_lookup(name); assert(src != NULL); switch (src->type) { case 'i': /* Byte-sized integral type. */ case 'b': /* Bit-sized integral types. */ case 't': return (src->value.ivalue); /* NOTREACHED */ case 'c': /* Character array. */ case 'z': /* Null-padded string. */ return ((intptr_t)src->value.svalue); /* NOTREACHED */ default: ; /* NOTREACHED */ } return (0); /* This should never happen. */ } static struct editentry * editentry_lookup(char *name) { struct editentry *scan; assert(name != NULL); STAILQ_FOREACH(scan, &editlist, link) { if (strcasecmp(scan->name, name) == 0) return (scan); } /* Not found during list traversal. */ return (NULL); } static int editentry_set(char *name, char *newvalue, int editonly) { struct editentry *dest; /* Modepage entry to update. */ char *cval; /* Pointer to new string value. */ char *convertend; /* End-of-conversion pointer. */ int ival; /* New integral value. */ int resolution; /* Resolution in bits for integer conversion. */ int resolution_max; /* Maximum resolution for modepage's size. */ assert(newvalue != NULL); if (*newvalue == '\0') return (0); /* Nothing to do. */ if ((dest = editentry_lookup(name)) == NULL) returnerr(ENOENT); if (!dest->editable && editonly) returnerr(EPERM); switch (dest->type) { case 'i': /* Byte-sized integral type. */ case 'b': /* Bit-sized integral types. */ case 't': /* Convert the value string to an integer. */ resolution = (dest->type == 'i')? 8: 1; ival = (int)strtol(newvalue, &convertend, 0); if (*convertend != '\0') returnerr(EINVAL); /* * Determine the maximum value of the given size for the * current resolution. * XXX Lovely x86's optimize out the case of shifting by 32, * and gcc doesn't currently workaround it (even for int64's), * so we have to kludge it. */ if (resolution * dest->size == 32) resolution_max = 0xffffffff; else resolution_max = (1 << (resolution * dest->size)) - 1; if (ival > resolution_max || ival < 0) { int newival = (ival < 0) ? 0 : resolution_max; warnx("value %d is out of range for entry %s; clipping " "to %d", ival, name, newival); ival = newival; } if (dest->value.ivalue != ival) editlist_changed = 1; dest->value.ivalue = ival; break; case 'c': /* Character array. */ case 'z': /* Null-padded string. */ if ((cval = malloc(dest->size + 1)) == NULL) err(EX_OSERR, NULL); bzero(cval, dest->size + 1); strncpy(cval, newvalue, dest->size); if (dest->type == 'z') { /* Convert trailing spaces to nulls. */ char *conv_end; for (conv_end = cval + dest->size; conv_end >= cval; conv_end--) { if (*conv_end == ' ') *conv_end = '\0'; else if (*conv_end != '\0') break; } } if (strncmp(dest->value.svalue, cval, dest->size) == 0) { /* Nothing changed, free the newly allocated string. */ free(cval); break; } if (dest->value.svalue != NULL) { /* Free the current string buffer. */ free(dest->value.svalue); dest->value.svalue = NULL; } dest->value.svalue = cval; editlist_changed = 1; break; default: ; /* NOTREACHED */ } return (0); } static void nameentry_create(int pagenum, char *name) { struct pagename *newentry; if (pagenum < 0 || name == NULL || name[0] == '\0') return; /* Allocate memory for the new entry and a copy of the entry name. */ if ((newentry = malloc(sizeof(struct pagename))) == NULL || (newentry->name = strdup(name)) == NULL) err(EX_OSERR, NULL); /* Trim any trailing whitespace for the page name. */ RTRIM(newentry->name); newentry->pagenum = pagenum; SLIST_INSERT_HEAD(&namelist, newentry, link); } static struct pagename * nameentry_lookup(int pagenum) { struct pagename *scan; SLIST_FOREACH(scan, &namelist, link) { if (pagenum == scan->pagenum) return (scan); } /* Not found during list traversal. */ return (NULL); } static int load_format(const char *pagedb_path, int page) { FILE *pagedb; char str_pagenum[MAX_PAGENUM_LEN]; char str_pagename[MAX_PAGENAME_LEN]; int pagenum; int depth; /* Quoting depth. */ int found; int lineno; enum { LOCATE, PAGENAME, PAGEDEF } state; char c; #define SETSTATE_LOCATE do { \ str_pagenum[0] = '\0'; \ str_pagename[0] = '\0'; \ pagenum = -1; \ state = LOCATE; \ } while (0) #define SETSTATE_PAGENAME do { \ str_pagename[0] = '\0'; \ state = PAGENAME; \ } while (0) #define SETSTATE_PAGEDEF do { \ format[0] = '\0'; \ state = PAGEDEF; \ } while (0) #define UPDATE_LINENO do { \ if (c == '\n') \ lineno++; \ } while (0) #define BUFFERFULL(buffer) (strlen(buffer) + 1 >= sizeof(buffer)) if ((pagedb = fopen(pagedb_path, "r")) == NULL) returnerr(ENOENT); SLIST_INIT(&namelist); depth = 0; lineno = 0; found = 0; SETSTATE_LOCATE; while ((c = fgetc(pagedb)) != EOF) { /* Keep a line count to make error messages more useful. */ UPDATE_LINENO; /* Skip over comments anywhere in the mode database. */ if (c == '#') { do { c = fgetc(pagedb); } while (c != '\n' && c != EOF); UPDATE_LINENO; continue; } /* Strip out newline characters. */ if (c == '\n') continue; /* Keep track of the nesting depth for braces. */ if (c == PAGEDEF_START) depth++; else if (c == PAGEDEF_END) { depth--; if (depth < 0) { errx(EX_OSFILE, "%s:%d: %s", pagedb_path, lineno, "mismatched bracket"); } } switch (state) { case LOCATE: /* * Locate the page the user is interested in, skipping * all others. */ if (isspace(c)) { /* Ignore all whitespace between pages. */ break; } else if (depth == 0 && c == PAGEENTRY_END) { /* * A page entry terminator will reset page * scanning (useful for assigning names to * modes without providing a mode definition). */ /* Record the name of this page. */ pagenum = strtol(str_pagenum, NULL, 0); nameentry_create(pagenum, str_pagename); SETSTATE_LOCATE; } else if (depth == 0 && c == PAGENAME_START) { SETSTATE_PAGENAME; } else if (c == PAGEDEF_START) { pagenum = strtol(str_pagenum, NULL, 0); if (depth == 1) { /* Record the name of this page. */ nameentry_create(pagenum, str_pagename); /* * Only record the format if this is * the page we are interested in. */ if (page == pagenum && !found) SETSTATE_PAGEDEF; } } else if (c == PAGEDEF_END) { /* Reset the processor state. */ SETSTATE_LOCATE; } else if (depth == 0 && ! BUFFERFULL(str_pagenum)) { strncat(str_pagenum, &c, 1); } else if (depth == 0) { errx(EX_OSFILE, "%s:%d: %s %zd %s", pagedb_path, lineno, "page identifier exceeds", sizeof(str_pagenum) - 1, "characters"); } break; case PAGENAME: if (c == PAGENAME_END) { /* * Return to LOCATE state without resetting the * page number buffer. */ state = LOCATE; } else if (! BUFFERFULL(str_pagename)) { strncat(str_pagename, &c, 1); } else { errx(EX_OSFILE, "%s:%d: %s %zd %s", pagedb_path, lineno, "page name exceeds", sizeof(str_pagenum) - 1, "characters"); } break; case PAGEDEF: /* * Transfer the page definition into a format buffer * suitable for use with CDB encoding/decoding routines. */ if (depth == 0) { found = 1; SETSTATE_LOCATE; } else if (! BUFFERFULL(format)) { strncat(format, &c, 1); } else { errx(EX_OSFILE, "%s:%d: %s %zd %s", pagedb_path, lineno, "page definition exceeds", sizeof(format) - 1, "characters"); } break; default: ; /* NOTREACHED */ } /* Repeat processing loop with next character. */ } if (ferror(pagedb)) err(EX_OSFILE, "%s", pagedb_path); /* Close the SCSI page database. */ fclose(pagedb); if (!found) /* Never found a matching page. */ returnerr(ESRCH); return (0); } static void editlist_populate(struct cam_device *device, int modepage, int page_control, int dbd, int retries, int timeout) { u_int8_t data[MAX_COMMAND_SIZE];/* Buffer to hold sense data. */ u_int8_t *mode_pars; /* Pointer to modepage params. */ struct scsi_mode_header_6 *mh; /* Location of mode header. */ struct scsi_mode_page_header *mph; STAILQ_INIT(&editlist); /* Fetch changeable values; use to build initial editlist. */ mode_sense(device, modepage, 1, dbd, retries, timeout, data, sizeof(data)); mh = (struct scsi_mode_header_6 *)data; mph = MODE_PAGE_HEADER(mh); mode_pars = MODE_PAGE_DATA(mph); /* Decode the value data, creating edit_entries for each value. */ buff_decode_visit(mode_pars, mh->data_length, format, editentry_create, 0); /* Fetch the current/saved values; use to set editentry values. */ mode_sense(device, modepage, page_control, dbd, retries, timeout, data, sizeof(data)); buff_decode_visit(mode_pars, mh->data_length, format, editentry_update, 0); } static void editlist_save(struct cam_device *device, int modepage, int page_control, int dbd, int retries, int timeout) { u_int8_t data[MAX_COMMAND_SIZE];/* Buffer to hold sense data. */ u_int8_t *mode_pars; /* Pointer to modepage params. */ struct scsi_mode_header_6 *mh; /* Location of mode header. */ struct scsi_mode_page_header *mph; /* Make sure that something changed before continuing. */ if (! editlist_changed) return; /* * Preload the CDB buffer with the current mode page data. * XXX If buff_encode_visit would return the number of bytes encoded * we *should* use that to build a header from scratch. As it is * now, we need mode_sense to find out the page length. */ mode_sense(device, modepage, page_control, dbd, retries, timeout, data, sizeof(data)); /* Initial headers & offsets. */ mh = (struct scsi_mode_header_6 *)data; mph = MODE_PAGE_HEADER(mh); mode_pars = MODE_PAGE_DATA(mph); /* Encode the value data to be passed back to the device. */ buff_encode_visit(mode_pars, mh->data_length, format, editentry_save, 0); /* Eliminate block descriptors. */ bcopy(mph, ((u_int8_t *)mh) + sizeof(*mh), sizeof(*mph) + mph->page_length); /* Recalculate headers & offsets. */ mh->blk_desc_len = 0; /* No block descriptors. */ mh->dev_spec = 0; /* Clear device-specific parameters. */ mph = MODE_PAGE_HEADER(mh); mode_pars = MODE_PAGE_DATA(mph); mph->page_code &= SMS_PAGE_CODE;/* Isolate just the page code. */ mh->data_length = 0; /* Reserved for MODE SELECT command. */ /* * Write the changes back to the device. If the user editted control * page 3 (saved values) then request the changes be permanently * recorded. */ mode_select(device, (page_control << PAGE_CTRL_SHIFT == SMS_PAGE_CTRL_SAVED), retries, timeout, (u_int8_t *)mh, sizeof(*mh) + mh->blk_desc_len + sizeof(*mph) + mph->page_length); } static int modepage_write(FILE *file, int editonly) { struct editentry *scan; int written = 0; STAILQ_FOREACH(scan, &editlist, link) { if (scan->editable || !editonly) { written++; if (scan->type == 'c' || scan->type == 'z') { fprintf(file, "%s: %s\n", scan->name, scan->value.svalue); } else { fprintf(file, "%s: %d\n", scan->name, scan->value.ivalue); } } } return (written); } static int modepage_read(FILE *file) { char *buffer; /* Pointer to dynamic line buffer. */ char *line; /* Pointer to static fgetln buffer. */ char *name; /* Name portion of the line buffer. */ char *value; /* Value portion of line buffer. */ size_t length; /* Length of static fgetln buffer. */ #define ABORT_READ(message, param) do { \ warnx(message, param); \ free(buffer); \ returnerr(EAGAIN); \ } while (0) while ((line = fgetln(file, &length)) != NULL) { /* Trim trailing whitespace (including optional newline). */ while (length > 0 && isspace(line[length - 1])) length--; /* Allocate a buffer to hold the line + terminating null. */ if ((buffer = malloc(length + 1)) == NULL) err(EX_OSERR, NULL); memcpy(buffer, line, length); buffer[length] = '\0'; /* Strip out comments. */ if ((value = strchr(buffer, '#')) != NULL) *value = '\0'; /* The name is first in the buffer. Trim whitespace.*/ name = buffer; RTRIM(name); while (isspace(*name)) name++; /* Skip empty lines. */ if (strlen(name) == 0) continue; /* The name ends at the colon; the value starts there. */ if ((value = strrchr(buffer, ':')) == NULL) ABORT_READ("no value associated with %s", name); *value = '\0'; /* Null-terminate name. */ value++; /* Value starts afterwards. */ /* Trim leading and trailing whitespace. */ RTRIM(value); while (isspace(*value)) value++; /* Make sure there is a value left. */ if (strlen(value) == 0) ABORT_READ("no value associated with %s", name); /* Update our in-memory copy of the modepage entry value. */ if (editentry_set(name, value, 1) != 0) { if (errno == ENOENT) { /* No entry by the name. */ ABORT_READ("no such modepage entry \"%s\"", name); } else if (errno == EINVAL) { /* Invalid value. */ ABORT_READ("Invalid value for entry \"%s\"", name); } else if (errno == ERANGE) { /* Value out of range for entry type. */ ABORT_READ("value out of range for %s", name); } else if (errno == EPERM) { /* Entry is not editable; not fatal. */ warnx("modepage entry \"%s\" is read-only; " "skipping.", name); } } free(buffer); } return (ferror(file)? -1: 0); #undef ABORT_READ } static void modepage_edit(void) { const char *editor; char *commandline; int fd; int written; if (!isatty(fileno(stdin))) { /* Not a tty, read changes from stdin. */ modepage_read(stdin); return; } /* Lookup editor to invoke. */ if ((editor = getenv("EDITOR")) == NULL) editor = DEFAULT_EDITOR; /* Create temp file for editor to modify. */ if ((fd = mkstemp(edit_path)) == -1) errx(EX_CANTCREAT, "mkstemp failed"); atexit(cleanup_editfile); if ((edit_file = fdopen(fd, "w")) == NULL) err(EX_NOINPUT, "%s", edit_path); written = modepage_write(edit_file, 1); fclose(edit_file); edit_file = NULL; if (written == 0) { warnx("no editable entries"); cleanup_editfile(); return; } /* * Allocate memory to hold the command line (the 2 extra characters * are to hold the argument separator (a space), and the terminating * null character. */ commandline = malloc(strlen(editor) + strlen(edit_path) + 2); if (commandline == NULL) err(EX_OSERR, NULL); sprintf(commandline, "%s %s", editor, edit_path); /* Invoke the editor on the temp file. */ if (system(commandline) == -1) err(EX_UNAVAILABLE, "could not invoke %s", editor); free(commandline); if ((edit_file = fopen(edit_path, "r")) == NULL) err(EX_NOINPUT, "%s", edit_path); /* Read any changes made to the temp file. */ modepage_read(edit_file); cleanup_editfile(); } static void modepage_dump(struct cam_device *device, int page, int page_control, int dbd, int retries, int timeout) { u_int8_t data[MAX_COMMAND_SIZE];/* Buffer to hold sense data. */ u_int8_t *mode_pars; /* Pointer to modepage params. */ struct scsi_mode_header_6 *mh; /* Location of mode header. */ struct scsi_mode_page_header *mph; int mode_idx; /* Index for scanning mode params. */ mode_sense(device, page, page_control, dbd, retries, timeout, data, sizeof(data)); mh = (struct scsi_mode_header_6 *)data; mph = MODE_PAGE_HEADER(mh); mode_pars = MODE_PAGE_DATA(mph); /* Print the raw mode page data with newlines each 8 bytes. */ for (mode_idx = 0; mode_idx < mph->page_length; mode_idx++) { printf("%02x%c", mode_pars[mode_idx], (((mode_idx + 1) % 8) == 0) ? '\n' : ' '); } putchar('\n'); } static void cleanup_editfile(void) { if (edit_file == NULL) return; if (fclose(edit_file) != 0 || unlink(edit_path) != 0) warn("%s", edit_path); edit_file = NULL; } void mode_edit(struct cam_device *device, int page, int page_control, int dbd, int edit, int binary, int retry_count, int timeout) { const char *pagedb_path; /* Path to modepage database. */ if (edit && binary) errx(EX_USAGE, "cannot edit in binary mode."); if (! binary) { if ((pagedb_path = getenv("SCSI_MODES")) == NULL) pagedb_path = DEFAULT_SCSI_MODE_DB; if (load_format(pagedb_path, page) != 0 && (edit || verbose)) { if (errno == ENOENT) { /* Modepage database file not found. */ warn("cannot open modepage database \"%s\"", pagedb_path); } else if (errno == ESRCH) { /* Modepage entry not found in database. */ warnx("modepage %d not found in database" "\"%s\"", page, pagedb_path); } /* We can recover in display mode, otherwise we exit. */ if (!edit) { warnx("reverting to binary display only"); binary = 1; } else exit(EX_OSFILE); } editlist_populate(device, page, page_control, dbd, retry_count, timeout); } if (edit) { if (page_control << PAGE_CTRL_SHIFT != SMS_PAGE_CTRL_CURRENT && page_control << PAGE_CTRL_SHIFT != SMS_PAGE_CTRL_SAVED) errx(EX_USAGE, "it only makes sense to edit page 0 " "(current) or page 3 (saved values)"); modepage_edit(); editlist_save(device, page, page_control, dbd, retry_count, timeout); } else if (binary || STAILQ_EMPTY(&editlist)) { /* Display without formatting information. */ modepage_dump(device, page, page_control, dbd, retry_count, timeout); } else { /* Display with format. */ modepage_write(stdout, 0); } } void mode_list(struct cam_device *device, int page_control, int dbd, int retry_count, int timeout) { u_int8_t data[MAX_COMMAND_SIZE];/* Buffer to hold sense data. */ u_int8_t *mode_pars; /* Pointer to modepage params. */ struct scsi_mode_header_6 *mh; /* Location of mode header. */ struct scsi_mode_page_header *mph; struct pagename *nameentry; const char *pagedb_path; int len; if ((pagedb_path = getenv("SCSI_MODES")) == NULL) pagedb_path = DEFAULT_SCSI_MODE_DB; if (load_format(pagedb_path, 0) != 0 && verbose && errno == ENOENT) { /* Modepage database file not found. */ warn("cannot open modepage database \"%s\"", pagedb_path); } /* Build the list of all mode pages by querying the "all pages" page. */ mode_sense(device, SMS_ALL_PAGES_PAGE, page_control, dbd, retry_count, timeout, data, sizeof(data)); mh = (struct scsi_mode_header_6 *)data; len = mh->blk_desc_len; /* Skip block descriptors. */ /* Iterate through the pages in the reply. */ while (len < mh->data_length) { /* Locate the next mode page header. */ mph = (struct scsi_mode_page_header *) ((intptr_t)mh + sizeof(*mh) + len); mode_pars = MODE_PAGE_DATA(mph); mph->page_code &= SMS_PAGE_CODE; nameentry = nameentry_lookup(mph->page_code); if (nameentry == NULL || nameentry->name == NULL) printf("0x%02x\n", mph->page_code); else printf("0x%02x\t%s\n", mph->page_code, nameentry->name); len += mph->page_length + sizeof(*mph); } }