PKGBUILDs/core/udev/resolve-modalias.c

74 lines
1.3 KiB
C
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#include <stdio.h>
#include <fnmatch.h>
#include <string.h>
#include <malloc.h>
static char *my_getline(FILE *file) {
static size_t size = 1024;
static char *buf = NULL;
static unsigned int i = 0, r = 0;;
if(buf == NULL)
buf = (char*)malloc(size);
if(i) {
memmove(buf, buf+i, size-i);
r -= i;
i = 0;
}
while(1) {
if(i == size) {
size *= 2;
buf = (char*)realloc(buf, size);
}
if(i==r)
r += fread(buf+i, 1, size-i, file);
if(i==r && i == 0) {
free(buf);
buf = NULL;
r = 0;
return NULL;
}
if(i==r || buf[i] == '\n') {
buf[i++] = '\0';
return buf;
}
i++;
}
}
int main(int argc, char *argv[]) {
char *line, *pattern, *module;
char *pos1, *pos2;
if(argc != 3) {
fprintf(stderr, "usage: resolve-modalias <alias file> <modalias>\n");
return 1;
}
FILE *f=fopen(argv[1], "r");
if(!f) {
perror("error opening alias file");
return 1;
}
while((line=my_getline(f))!=NULL) {
if(!strncmp(line, "alias", strlen("alias"))) {
pos1 = index(line, ' ');
pos2 = index(pos1+1, ' ');
pattern = pos1+1;
*pos2 = '\0';
module = pos2+1;
if(!fnmatch(pattern, argv[2], 0))
printf("%s\n", module);
}
}
return 0;
}
//vim: set ts=2 sw=2 et: