Bring in my latest changes. The CDROM strategy should now work, and a
(hopefully) generic fs extraction system is in place. Now the other methods :-(
This commit is contained in:
gpalmer
parent
35f00efaaa
commit
51b03e481e
@ -4,7 +4,7 @@
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* This is probably the last attempt in the `sysinstall' line, the next
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* generation being slated to essentially a complete rewrite.
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*
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* $Id: media_strategy.c,v 1.2 1995/05/20 03:49:09 gpalmer Exp $
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* $Id: media_strategy.c,v 1.1 1995/05/17 14:39:53 jkh Exp $
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*
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* Copyright (c) 1995
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* Jordan Hubbard. All rights reserved.
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@ -51,6 +51,7 @@
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#include <sys/wait.h>
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#include <sys/param.h>
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#include <sys/dkbad.h>
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#include <sys/mman.h>
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#define MSDOSFS
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#define CD9660
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@ -60,10 +61,198 @@
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#undef CD9660
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#undef NFS
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int
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genericGetDist(char *dist, char *source)
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#define MAX_ATTRIBS 20
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#define MAX_NAME 511
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#define MAX_VALUE 4095
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struct attribs {
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char *name;
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char *value;
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};
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static int lno;
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static int num_attribs;
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static int
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attr_parse(struct attribs **attr, char *file)
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{
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return 0;
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char hold_n[MAX_NAME+1];
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char hold_v[MAX_VALUE+1];
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int n, v, ch = 0;
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enum { LOOK, COMMENT, NAME, VALUE, COMMIT } state;
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FILE *fp;
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num_attribs = n = v = lno = 0;
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state = LOOK;
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if ((fp=fopen(file, "r")) == NULL)
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{
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msgFatal("Cannot open the information file `%s': %s (%d)", file, strerror(errno), errno);
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return 0;
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}
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while (state == COMMIT || (ch = fgetc(fp)) != EOF) {
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/* Count lines */
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if (ch == '\n')
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++lno;
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switch(state) {
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case LOOK:
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if (isspace(ch))
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continue;
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/* Allow shell or lisp style comments */
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else if (ch == '#' || ch == ';') {
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state = COMMENT;
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continue;
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}
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else if (isalpha(ch)) {
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hold_n[n++] = ch;
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state = NAME;
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}
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else {
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msgConfirm("Invalid character '%c' at line %d\n", ch, lno);
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return 0;
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}
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break;
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case COMMENT:
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if (ch == '\n')
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state = LOOK;
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break;
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case NAME:
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if (ch == '\n') {
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hold_n[n] = '\0';
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hold_v[v = 0] = '\0';
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state = COMMIT;
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}
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else if (isspace(ch))
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continue;
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else if (ch == '=') {
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hold_n[n] = '\0';
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state = VALUE;
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}
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else
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hold_n[n++] = ch;
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break;
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case VALUE:
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if (v == 0 && isspace(ch))
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continue;
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else if (ch == '{') {
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/* multiline value */
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while ((ch = fgetc(fp)) != '}') {
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if (ch == EOF) {
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msgConfirm("Unexpected EOF on line %d", lno);
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return 0;
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}
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else {
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if (v == MAX_VALUE) {
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msgConfirm("Value length overflow at line %d",
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lno);
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return 0;
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}
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hold_v[v++] = ch;
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}
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}
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hold_v[v] = '\0';
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state = COMMIT;
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}
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else if (ch == '\n') {
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hold_v[v] = '\0';
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state = COMMIT;
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}
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else {
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if (v == MAX_VALUE) {
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msgConfirm("Value length overflow at line %d", lno);
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return 0;
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}
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else
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hold_v[v++] = ch;
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}
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break;
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case COMMIT:
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attr[num_attribs]->name = strdup(hold_n);
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attr[num_attribs++]->value = strdup(hold_v);
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state = LOOK;
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v = n = 0;
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break;
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default:
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msgConfirm("Unknown state at line %d??\n", lno);
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return 0;
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}
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}
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return 1;
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}
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static const char *
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attr_match(struct attribs *attr, char *name)
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{
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int n = 0;
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while((strcmp(attr[n].name, name)!=0) && (n < num_attribs))
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n++;
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if (strcmp(attr[n].name, name))
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return((const char *) attr[n].value);
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return NULL;
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}
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static int
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genericGetDist(char *path, struct attribs *dist_attrib)
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{
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int fd;
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char buf[512];
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struct stat sb;
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int pfd[2], pid, numchunks;
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snprintf(buf, 512, "%s.tgz", path);
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if (stat(buf, &sb) == 0)
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{
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fd = open(buf, O_RDONLY, 0);
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return(fd);
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}
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snprintf(buf, 512, "%s.aa", path);
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if (stat(buf, &sb) != 0)
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{
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msgConfirm("Cannot find file(s) for distribution in ``%s''!\n", path);
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return 0;
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}
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numchunks = atoi(attr_match(dist_attrib, "pieces"));
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pipe(pfd);
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pid = fork();
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if (!pid)
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{
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caddr_t memory;
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int chunk = 0;
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dup2(pfd[1], 1); close(pfd[1]);
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close(pfd[0]);
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while (chunk < numchunks)
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{
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int fd;
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snprintf(buf, 512, "%s.%c%c", path, (chunk / 26), (chunk % 26));
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if ((fd = open(buf, O_RDONLY)) == NULL)
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msgFatal("Cannot find file `%s'!\n", buf);
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fstat(fd, &sb);
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memory = mmap(0, sb.st_size, PROT_READ, MAP_SHARED, fd, (off_t) 0);
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if (memory == (caddr_t) -1)
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msgFatal("mmap error: %s\n", strerror(errno));
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write(1, memory, sb.st_size);
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munmap(memory, sb.st_size);
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++chunk;
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}
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}
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close(pfd[1]);
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return(pfd[0]);
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}
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/* Various media "strategy" routines */
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@ -100,19 +289,35 @@ Is this a 2.0.5 CDROM?\n");
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return FALSE;
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}
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}
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return TRUE;
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}
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Boolean
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mediaGetCDROM(char *dist)
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{
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return TRUE;
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char buf[PATH_MAX];
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struct attribs *dist_attr;
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dist_attr = safe_malloc(sizeof(struct attribs) * MAX_ATTRIBS);
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snprintf(buf, PATH_MAX, "/mnt/stand/info/%s.inf", dist);
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if (attr_parse(&dist_attr, buf) == 0)
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{
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msgConfirm("Cannot load information file for distribution\n");
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return FALSE;
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}
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snprintf(buf, PATH_MAX, "/mnt/cdrom/%s", dist);
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return genericGetDist(buf, dist_attr);
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}
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void
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mediaCloseCDROM(Device *dev)
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{
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if (unmount("/mnt/cdrom", 0) != 0)
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msgConfirm("Could not unmount the CDROM: %s\n", strerror(errno));
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return;
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}
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@ -134,24 +339,6 @@ mediaCloseFloppy(Device *dev)
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return;
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}
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Boolean
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mediaInitDOS(Device *dev)
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{
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return TRUE;
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}
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Boolean
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mediaGetDOS(char *dist)
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{
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return TRUE;
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}
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void
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mediaCloseDOS(Device *dev)
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{
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return;
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}
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Boolean
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mediaInitTape(Device *dev)
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{
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@ -201,3 +388,20 @@ mediaGetUFS(char *dist)
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/* UFS has no close routine since this is handled at the device level */
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Boolean
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mediaInitDOS(Device *dev)
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{
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return TRUE;
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}
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Boolean
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mediaGetDOS(char *dist)
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{
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return TRUE;
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}
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void
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mediaCloseDOS(Device *dev)
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{
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}
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