lspci: Print names of capabilities even if we can't decode the rest

[thirdparty/pciutils.git] / common.c

diff --git a/common.c b/common.c
index 723d66b66a882728f28a5e15d77cbde9bdd8af40..c5a3c8f2ec1349983fcd3c41867812af2fe3a25c 100644 (file)
--- a/common.c
+++ b/common.c
@@ -1,7 +1,7 @@
 /*
- *     Linux PCI Utilities -- Common Functions
+ *     The PCI Utilities -- Common Functions
  *
- *     Copyright (c) 1997--2003 Martin Mares <mj@ucw.cz>
+ *     Copyright (c) 1997--2016 Martin Mares <mj@ucw.cz>
  *
  *     Can be freely distributed and used under the terms of the GNU GPL.
  */
@@ -20,51 +20,114 @@ die(char *msg, ...)
   va_list args;
 
   va_start(args, msg);
-  fputs("lspci: ", stderr);
+  fprintf(stderr, "%s: ", program_name);
   vfprintf(stderr, msg, args);
   fputc('\n', stderr);
   exit(1);
 }
 
 void *
-xmalloc(unsigned int howmuch)
+xmalloc(size_t howmuch)
 {
   void *p = malloc(howmuch);
   if (!p)
-    die("Unable to allocate %d bytes of memory", howmuch);
+    die("Unable to allocate %d bytes of memory", (int) howmuch);
   return p;
 }
 
+void *
+xrealloc(void *ptr, size_t howmuch)
+{
+  void *p = realloc(ptr, howmuch);
+  if (!p)
+    die("Unable to allocate %d bytes of memory", (int) howmuch);
+  return p;
+}
+
+char *
+xstrdup(const char *str)
+{
+  int len = strlen(str) + 1;
+  char *copy = xmalloc(len);
+  memcpy(copy, str, len);
+  return copy;
+}
+
+static void
+set_pci_method(struct pci_access *pacc, char *arg)
+{
+  char *name;
+  int i;
+
+  if (!strcmp(arg, "help"))
+    {
+      printf("Known PCI access methods:\n\n");
+      for (i=0; name = pci_get_method_name(i); i++)
+       if (name[0])
+         printf("%s\n", name);
+      exit(0);
+    }
+  else
+    {
+      i = pci_lookup_method(arg);
+      if (i < 0)
+       die("No such PCI access method: %s (see `-A help' for a list)", arg);
+      pacc->method = i;
+    }
+}
+
+static void
+set_pci_option(struct pci_access *pacc, char *arg)
+{
+  if (!strcmp(arg, "help"))
+    {
+      struct pci_param *p;
+      printf("Known PCI access parameters:\n\n");
+      for (p=NULL; p=pci_walk_params(pacc, p);)
+       printf("%-20s %s (%s)\n", p->param, p->help, p->value);
+      exit(0);
+    }
+  else
+    {
+      char *sep = strchr(arg, '=');
+      if (!sep)
+       die("Invalid PCI access parameter syntax: %s", arg);
+      *sep++ = 0;
+      if (pci_set_param(pacc, arg, sep) < 0)
+       die("Unrecognized PCI access parameter: %s (see `-O help' for a list)", arg);
+    }
+}
+
 int
-parse_generic_option(int i, struct pci_access *pacc, char *optarg)
+parse_generic_option(int i, struct pci_access *pacc, char *arg)
 {
   switch (i)
     {
-#ifdef HAVE_PM_LINUX_PROC
-    case 'P':
-      pacc->method_params[PCI_ACCESS_PROC_BUS_PCI] = optarg;
-      pacc->method = PCI_ACCESS_PROC_BUS_PCI;
-      break;
-#endif
-#ifdef HAVE_PM_INTEL_CONF
+#ifdef PCI_HAVE_PM_INTEL_CONF
     case 'H':
-      if (!strcmp(optarg, "1"))
+      if (!strcmp(arg, "1"))
        pacc->method = PCI_ACCESS_I386_TYPE1;
-      else if (!strcmp(optarg, "2"))
+      else if (!strcmp(arg, "2"))
        pacc->method = PCI_ACCESS_I386_TYPE2;
       else
-       die("Unknown hardware configuration type %s", optarg);
+       die("Unknown hardware configuration type %s", arg);
       break;
 #endif
-#ifdef HAVE_PM_DUMP
+#ifdef PCI_HAVE_PM_DUMP
     case 'F':
-      pacc->method_params[PCI_ACCESS_DUMP] = optarg;
+      pci_set_param(pacc, "dump.name", arg);
       pacc->method = PCI_ACCESS_DUMP;
       break;
 #endif
+    case 'A':
+      set_pci_method(pacc, arg);
+      break;
     case 'G':
       pacc->debugging++;
       break;
+    case 'O':
+      set_pci_option(pacc, arg);
+      break;
     default:
       return 0;
     }