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* The PCI Library -- Parsing of the ID list
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* Copyright (c) 1997--2008 Martin Mares <mj@ucw.cz>
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* Can be freely distributed and used under the terms of the GNU GPL.
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#ifdef PCI_COMPRESSED_IDS
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typedef gzFile pci_file;
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#define pci_gets(f, l, s) gzgets(f, l, s)
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#define pci_eof(f) gzeof(f)
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static pci_file pci_open(struct pci_access *a)
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result = gzopen(a->id_file_name, "rb");
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len = strlen(a->id_file_name);
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if (len >= 3 && memcmp(a->id_file_name + len - 3, ".gz", 3) != 0)
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new_name = malloc(len - 2);
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memcpy(new_name, a->id_file_name, len - 3);
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new_name[len - 3] = 0;
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pci_set_name_list_path(a, new_name, 1);
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return gzopen(a->id_file_name, "rb");
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#define pci_close(f) gzclose(f)
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#define PCI_ERROR(f, err) \
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gzerror(f, &errnum); \
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if (errnum >= 0) err = NULL; \
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else if (errnum == Z_ERRNO) err = "I/O error"; \
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else err = zError(errnum); \
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typedef FILE * pci_file;
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#define pci_gets(f, l, s) fgets(l, s, f)
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#define pci_eof(f) feof(f)
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#define pci_open(a) fopen(a->id_file_name, "r")
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#define pci_close(f) fclose(f)
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#define PCI_ERROR(f, err) if (!err && ferror(f)) err = "I/O error";
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static int id_hex(char *p, int cnt)
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if (*p >= '0' && *p <= '9')
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else if (*p >= 'a' && *p <= 'f')
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else if (*p >= 'A' && *p <= 'F')
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static inline int id_white_p(int c)
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return (c == ' ') || (c == '\t');
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static const char *id_parse_list(struct pci_access *a, pci_file f, int *lino)
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int id1=0, id2=0, id3=0, id4=0;
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static const char parse_error[] = "Parse error";
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while (pci_gets(f, line, sizeof(line)))
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while (*p && *p != '\n' && *p != '\r')
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if (!*p && !pci_eof(f))
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return "Line too long";
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if (p > line && (p[-1] == ' ' || p[-1] == '\t'))
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while (id_white_p(*p))
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if (!*p || *p == '#')
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if (!nest) /* Top-level entries */
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if (p[0] == 'C' && p[1] == ' ') /* Class block */
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if ((id1 = id_hex(p+2, 2)) < 0 || !id_white_p(p[4]))
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else if (p[0] == 'S' && p[1] == ' ')
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{ /* Generic subsystem block */
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if ((id1 = id_hex(p+2, 4)) < 0 || p[6])
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if (!pci_id_lookup(a, 0, ID_VENDOR, id1, 0, 0, 0))
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return "Vendor does not exist";
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cat = ID_GEN_SUBSYSTEM;
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else if (p[0] >= 'A' && p[0] <= 'Z' && p[1] == ' ')
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{ /* Unrecognized block (RFU) */
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if ((id1 = id_hex(p, 4)) < 0 || !id_white_p(p[4]))
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else if (cat == ID_UNKNOWN) /* Nested entries in RFU blocks are skipped */
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else if (nest == 1) /* Nesting level 1 */
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if ((id2 = id_hex(p, 4)) < 0 || !id_white_p(p[4]))
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case ID_GEN_SUBSYSTEM:
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if ((id2 = id_hex(p, 4)) < 0 || !id_white_p(p[4]))
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if ((id2 = id_hex(p, 2)) < 0 || !id_white_p(p[2]))
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else if (nest == 2) /* Nesting level 2 */
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if ((id3 = id_hex(p, 4)) < 0 || !id_white_p(p[4]) || (id4 = id_hex(p+5, 4)) < 0 || !id_white_p(p[9]))
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if ((id3 = id_hex(p, 2)) < 0 || !id_white_p(p[2]))
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else /* Nesting level 3 or more */
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while (id_white_p(*p))
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if (pci_id_insert(a, cat, id1, id2, id3, id4, p, SRC_LOCAL))
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return "Duplicate entry";
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pci_load_name_list(struct pci_access *a)
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pci_free_name_list(a);
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a->id_load_failed = 1;
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if (!(f = pci_open(a)))
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err = id_parse_list(a, f, &lino);
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a->error("%s at %s, line %d\n", err, a->id_file_name, lino);
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a->id_load_failed = 0;
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pci_free_name_list(struct pci_access *a)
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pci_id_cache_flush(a);
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a->id_load_failed = 0;
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pci_set_name_list_path(struct pci_access *a, char *name, int to_be_freed)
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free(a->id_file_name);
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a->id_file_name = name;
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a->free_id_name = to_be_freed;