core/fs/lib/searchconfig.c

   1 #include <dprintf.h>
   2 #include <stdio.h>
   3 #include <string.h>
   4 #include <core.h>
   5 #include <fs.h>
   6
   7 /*
   8  * Common implementation of load_config
   9  *
  10  * This searches for a specified set of filenames in a specified set
  11  * of directories.  If found, set the current working directory to
  12  * match.
  13  */
  14 int search_config(const char *search_directories[], const char *filenames[])
  15 {
  16     char confignamebuf[FILENAME_MAX];
  17     com32sys_t regs;
  18     const char *sd, **sdp;
  19     const char *sf, **sfp;
  20
  21     for (sdp = search_directories; (sd = *sdp); sdp++) {
  22         for (sfp = filenames; (sf = *sfp); sfp++) {
  23             memset(&regs, 0, sizeof regs);
  24             snprintf(confignamebuf, sizeof confignamebuf,
  25                      "%s%s%s",
  26                      sd, (*sd && sd[strlen(sd)-1] == '/') ? "" : "/",
  27                      sf);
  28             realpath(ConfigName, confignamebuf, FILENAME_MAX);
  29             regs.edi.w[0] = OFFS_WRT(ConfigName, 0);
  30             dprintf("Config search: %s\n", ConfigName);
  31             call16(core_open, &regs, &regs);
  32             if (!(regs.eflags.l & EFLAGS_ZF)) {
  33                 chdir(sd);
  34                 return 0;       /* Got it */
  35             }
  36         }
  37     }
  38
  39     return -1;
  40 }