diff options
Diffstat (limited to 'arscan.c')
| -rw-r--r-- | arscan.c | 87 |
1 files changed, 83 insertions, 4 deletions
@@ -82,6 +82,7 @@ ar_scan (archive, function, arg) #ifdef AIAMAG FL_HDR fl_header; #endif + char *namemap = 0; register int desc = open (archive, O_RDONLY, 0); if (desc < 0) return -1; @@ -153,7 +154,9 @@ ar_scan (archive, function, arg) int uidval, gidval; long int data_offset; #else - char name[sizeof member_header.ar_name + 1]; + char namebuf[sizeof member_header.ar_name + 1]; + char *name; + int is_namemap; /* Nonzero if this entry maps long names. */ #endif long int eltsize; int eltmode; @@ -216,15 +219,54 @@ ar_scan (archive, function, arg) return -2; } + name = namebuf; bcopy (member_header.ar_name, name, sizeof member_header.ar_name); { register char *p = name + sizeof member_header.ar_name; - while (p > name && *--p == ' ') + do *p = '\0'; - + while (p > name && *--p == ' '); + +#ifndef AIAMAG + /* If the member name is "//" or "ARFILENAMES/" this may be + a list of file name mappings. The maximum file name + length supported by the standard archive format is 14 + characters. This member will actually always be the + first or second entry in the archive, but we don't check + that. */ + is_namemap = (!strcmp (name, "//") + || !strcmp (name, "ARFILENAMES/")); +#endif /* Not AIAMAG. */ /* On some systems, there is a slash after each member name. */ if (*p == '/') *p = '\0'; + +#ifndef AIAMAG + /* If the member name starts with a space or a slash, this + is an index into the file name mappings (used by GNU ar). + Otherwise if the member name looks like #1/NUMBER the + real member name appears in the element data (used by + 4.4BSD). */ + if (! is_namemap + && (name[0] == ' ' || name[0] == '/') + && namemap != 0) + name = namemap + atoi (name + 1); + else if (name[0] == '#' + && name[1] == '1' + && name[2] == '/') + { + int namesize = atoi (name + 3); + + name = (char *) alloca (namesize + 1); + nread = read (desc, name, namesize); + if (nread != namesize) + { + close (desc); + return -2; + } + name[namesize] = '\0'; + } +#endif /* Not AIAMAG. */ } #ifndef M_XENIX @@ -270,6 +312,40 @@ ar_scan (archive, function, arg) return -2; } #else + + /* If this member maps archive names, we must read it in. The + name map will always precede any members whose names must + be mapped. */ + if (is_namemap) + { + char *clear; + char *limit; + + namemap = (char *) alloca (eltsize); + nread = read (desc, namemap, eltsize); + if (nread != eltsize) + { + (void) close (desc); + return -2; + } + + /* The names are separated by newlines. Some formats have + a trailing slash. Null terminate the strings for + convenience. */ + limit = namemap + eltsize; + for (clear = namemap; clear < limit; clear++) + { + if (*clear == '\n') + { + *clear = '\0'; + if (clear[-1] == '/') + clear[-1] = '\0'; + } + } + + is_namemap = 0; + } + member_offset += AR_HDR_SIZE + eltsize; if (member_offset % 2 != 0) member_offset++; @@ -294,7 +370,10 @@ ar_name_equal (name, mem) if (p != 0) name = p + 1; -#if !defined (AIAMAG) && !defined (APOLLO) + /* We no longer use this kludge, since we + now support long archive member names. */ + +#if 0 && !defined (AIAMAG) && !defined (APOLLO) { /* `reallylongname.o' matches `reallylongnam.o'. |