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Diffstat (limited to 'lkm/vinum/util.c')
| -rw-r--r-- | lkm/vinum/util.c | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/lkm/vinum/util.c b/lkm/vinum/util.c new file mode 100644 index 0000000000000..512140438fc95 --- /dev/null +++ b/lkm/vinum/util.c @@ -0,0 +1,211 @@ +/*- + * Copyright (c) 1997, 1998 + * Nan Yang Computer Services Limited. All rights reserved. + * + * This software is distributed under the so-called ``Berkeley + * License'': + * + * 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. + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Nan Yang Computer + * Services Limited. + * 4. Neither the name of the Company nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * This software is provided ``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 company or contributors 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. + * + * $Id: util.c,v 1.7 1998/08/07 09:23:10 grog Exp grog $ + */ + +/* This file contains utility routines used both in kernel and user context */ + +#include "vinumhdr.h" +#include "statetexts.h" +#ifndef REALLYKERNEL +#include <stdio.h> +extern jmp_buf command_fail; /* return on a failed command */ +#endif + +static char numeric_state[32]; /* temporary buffer for ASCII conversions */ +#define STATECOUNT(x) (sizeof (x##statetext) / sizeof (char *)) +/* Return drive state as a string */ +char * +drive_state(enum drivestate state) +{ + if (((unsigned) state) >= STATECOUNT(drive)) { + sprintf(numeric_state, "Invalid state %d", (int) state); + return numeric_state; + } else + return drivestatetext[state]; +} + +/* Return volume state as a string */ +char * +volume_state(enum volumestate state) +{ + if (((unsigned) state) >= STATECOUNT(vol)) { + sprintf(numeric_state, "Invalid state %d", (int) state); + return numeric_state; + } else + return volstatetext[state]; +} + +/* Return plex state as a string */ +char * +plex_state(enum plexstate state) +{ + if (((unsigned) state) >= STATECOUNT(plex)) { + sprintf(numeric_state, "Invalid state %d", (int) state); + return numeric_state; + } else + return plexstatetext[state]; +} + +/* Return plex organization as a string */ +char * +plex_org(enum plexorg org) +{ + switch (org) { + case plex_disorg: /* disorganized */ + return "disorg"; + break; + + case plex_concat: /* concatenated plex */ + return "concat"; + break; + + case plex_striped: /* striped plex */ + return "striped"; + break; + + + default: + sprintf(numeric_state, "Invalid org %d", (int) org); + return numeric_state; + } +} + +/* Return sd state as a string */ +char * +sd_state(enum sdstate state) +{ + if (((unsigned) state) >= STATECOUNT(sd)) { + sprintf(numeric_state, "Invalid state %d", (int) state); + return numeric_state; + } else + return sdstatetext[state]; +} + +/* Now convert in the other direction */ +/* These are currently used only internally, + * so we don't do too much error checking */ +enum drivestate +DriveState(char *text) +{ + int i; + for (i = 0; i < STATECOUNT(drive); i++) + if (strcmp(text, drivestatetext[i]) == 0) /* found it */ + return (enum drivestate) i; + return -1; +} + +enum sdstate +SdState(char *text) +{ + int i; + for (i = 0; i < STATECOUNT(sd); i++) + if (strcmp(text, sdstatetext[i]) == 0) /* found it */ + return (enum sdstate) i; + return -1; +} + +enum plexstate +PlexState(char *text) +{ + int i; + for (i = 0; i < STATECOUNT(plex); i++) + if (strcmp(text, plexstatetext[i]) == 0) /* found it */ + return (enum plexstate) i; + return -1; +} + +enum volumestate +VolState(char *text) +{ + int i; + for (i = 0; i < STATECOUNT(vol); i++) + if (strcmp(text, volstatetext[i]) == 0) /* found it */ + return (enum volstate) i; + return -1; +} + +/* Take a number with an optional scale factor and convert + * it to a number of bytes. + * + * The scale factors are: + * + * b blocks (of 512 bytes) + * k kilobytes (1024 bytes) + * m megabytes (of 1024 * 1024 bytes) + * g gigabytes (of 1024 * 1024 * 1024 bytes) + */ +u_int64_t +sizespec(char *spec) +{ + u_int64_t size; + char *s; + + size = 0; + s = spec; + if ((*s >= '0') && (*s <= '9')) { /* it's numeric */ + while ((*s >= '0') && (*s <= '9')) /* it's numeric */ + size = size * 10 + *s++ - '0'; /* convert it */ + switch (*s) { + case '\0': + return size; + + case 'B': + case 'b': + return size * 512; + + case 'K': + case 'k': + return size * 1024; + + case 'M': + case 'm': + return size * 1024 * 1024; + + case 'G': + case 'g': + return size * 1024 * 1024 * 1024; + } + } +#ifdef REALLYKERNEL + throw_rude_remark(EINVAL, "Invalid length specification: %s", spec); +#else + fprintf(stderr, "Invalid length specification: %s", spec); + longjmp(command_fail, -1); +#endif + /* NOTREACHED */ + return -1; +} |