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-rw-r--r--util/options/build_opt_tbl.c130
1 files changed, 80 insertions, 50 deletions
diff --git a/util/options/build_opt_tbl.c b/util/options/build_opt_tbl.c
index d8e1b5d586..d9089e7327 100644
--- a/util/options/build_opt_tbl.c
+++ b/util/options/build_opt_tbl.c
@@ -1,6 +1,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <unistd.h>
#include <ctype.h>
#include <errno.h>
#include "../../src/include/pc80/mc146818rtc.h"
@@ -10,6 +11,7 @@
#define INPUT_LINE_MAX 256
#define MAX_VALUE_BYTE_LENGTH 64
+#define TMPFILE_TEMPLATE "/tmp/build_opt_tbl_XXXXXX"
static unsigned char cmos_table[4096];
@@ -95,16 +97,15 @@ void test_for_entry_overlaps(void *entry_start, void *entry_end)
}
/* This routine displays the usage options */
-void display_usage(void)
+void display_usage(char *name)
{
- printf("Usage build_opt_table [-b] [--option filename]\n");
- printf(" [--config filename]\n");
- printf(" [--header filename]\n");
- printf("b = build option_table.c\n");
- printf("--option = name of option table output file\n");
- printf("--config = build the definitions table from the given file\n");
- printf("--header = ouput a header file with the definitions\n");
- exit(1);
+ printf("Usage: %s [--config filename]\n", name);
+ printf(" [--option filename]\n");
+ printf(" [--header filename]\n\n");
+ printf("--config = Build the definitions table from the given file.\n");
+ printf("--option = Output a C source file with the definitions.\n");
+ printf("--header = Ouput a C header file with the definitions.\n");
+ exit(1);
}
@@ -213,6 +214,8 @@ int main(int argc, char **argv)
char *option=0;
char *header=0;
FILE *fp;
+ int tmpfile;
+ char tmpfilename[32];
struct cmos_option_table *ct;
struct cmos_entries *ce;
struct cmos_enums *c_enums, *c_enums_start;
@@ -233,39 +236,37 @@ int main(int argc, char **argv)
for(i=1;i<argc;i++) {
if(argv[i][0]!='-') {
- display_usage();
+ display_usage(argv[0]);
}
switch(argv[i][1]) {
- case 'b': /* build the table */
- break;
case '-': /* data is requested from a file */
switch(argv[i][2]) {
case 'c': /* use a configuration file */
if(strcmp(&argv[i][2],"config")) {
- display_usage();
+ display_usage(argv[0]);
}
config=argv[++i];
break;
case 'o': /* use a cmos definitions table file */
if(strcmp(&argv[i][2],"option")) {
- display_usage();
+ display_usage(argv[0]);
}
option=argv[++i];
break;
case 'h': /* Output a header file */
if (strcmp(&argv[i][2], "header") != 0) {
- display_usage();
+ display_usage(argv[0]);
}
header=argv[++i];
break;
default:
- display_usage();
+ display_usage(argv[0]);
break;
}
break;
default:
- display_usage();
+ display_usage(argv[0]);
break;
}
}
@@ -482,52 +483,72 @@ int main(int argc, char **argv)
ct->size += (cptr - (char *)(cmos_table + ct->size));
fclose(fp);
- /* test if an alternate file is to be created */
+ /* See if we want to output a C source file */
if(option) {
- if((fp=fopen(option,"w"))==NULL){
- fprintf(stderr, "Error - Can not open %s\n",option);
+ strcpy(tmpfilename, TMPFILE_TEMPLATE);
+ tmpfile = mkstemp(tmpfilename);
+ if(tmpfile == -1) {
+ perror("Error - Could not create temporary file");
exit(1);
}
- }
- else { /* no, so use the default option_table.c */
- if((fp=fopen("option_table.c","w"))==NULL){
- fprintf(stderr, "Error - Can not open option_table.c\n");
- exit(1);
+
+ if((fp=fdopen(tmpfile,"w"))==NULL){
+ perror("Error - Could not open temporary file");
+ unlink(tmpfilename);
+ exit(1);
}
- }
- /* write the header */
- if(!fwrite("unsigned char option_table[] = {",1,32,fp)) {
- fprintf(stderr, "Error - Could not write image file\n");
- fclose(fp);
- exit(1);
- }
- /* write the array values */
- for(i=0;i<(ct->size-1);i++) {
- if(!(i%10)) fwrite("\n\t",1,2,fp);
- sprintf(buf,"0x%02x,",cmos_table[i]);
- fwrite(buf,1,5,fp);
- }
- /* write the end */
- sprintf(buf,"0x%02x",cmos_table[i]);
- fwrite(buf,1,4,fp);
- if(!fwrite("};\n",1,3,fp)) {
- fprintf(stderr, "Error - Could not write image file\n");
- fclose(fp);
- exit(1);
- }
- fclose(fp);
+ /* write the header */
+ if(!fwrite("unsigned char option_table[] = {",1,32,fp)) {
+ perror("Error - Could not write image file");
+ fclose(fp);
+ unlink(tmpfilename);
+ exit(1);
+ }
+ /* write the array values */
+ for(i=0;i<(ct->size-1);i++) {
+ if(!(i%10)) fwrite("\n\t",1,2,fp);
+ sprintf(buf,"0x%02x,",cmos_table[i]);
+ fwrite(buf,1,5,fp);
+ }
+ /* write the end */
+ sprintf(buf,"0x%02x\n",cmos_table[i]);
+ fwrite(buf,1,4,fp);
+ if(!fwrite("};\n",1,3,fp)) {
+ perror("Error - Could not write image file");
+ fclose(fp);
+ unlink(tmpfilename);
+ exit(1);
+ }
+
+ fclose(fp);
+ if (rename(tmpfilename, option)) {
+ fprintf(stderr, "Error - Could not write %s: ", option);
+ perror(NULL);
+ unlink(tmpfilename);
+ exit(1);
+ }
+ }
/* See if we also want to output a C header file */
if (header) {
struct cmos_option_table *hdr;
struct lb_record *ptr, *end;
- fp = fopen(header, "w");
+
+ strcpy(tmpfilename, TMPFILE_TEMPLATE);
+ tmpfile = mkstemp(tmpfilename);
+ if(tmpfile == -1) {
+ perror("Error - Could not create temporary file");
+ exit(1);
+ }
+
+ fp = fdopen(tmpfile, "w");
if (!fp) {
- fprintf(stderr, "Error Can not open %s: %s\n",
- header, strerror(errno));
+ perror("Error - Could not open temporary file");
+ unlink(tmpfilename);
exit(1);
}
+
/* Get the cmos table header */
hdr = (struct cmos_option_table *)cmos_table;
/* Walk through the entry records */
@@ -544,6 +565,8 @@ int main(int argc, char **argv)
if (!is_ident((char *)ce->name)) {
fprintf(stderr, "Invalid identifier: %s\n",
ce->name);
+ fclose(fp);
+ unlink(tmpfilename);
exit(1);
}
fprintf(fp, "#define CMOS_VSTART_%s %d\n",
@@ -552,6 +575,13 @@ int main(int argc, char **argv)
ce->name, ce->length);
}
fclose(fp);
+
+ if (rename(tmpfilename, header)) {
+ fprintf(stderr, "Error - Could not write %s: ", header);
+ perror(NULL);
+ unlink(tmpfilename);
+ exit(1);
+ }
}
return(0);
}