diff options
Diffstat (limited to 'dir.c')
| -rw-r--r-- | dir.c | 192 |
1 files changed, 173 insertions, 19 deletions
@@ -33,6 +33,9 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ # ifdef HAVE_NDIR_H # include <ndir.h> # endif +# ifdef HAVE_VMSDIR_H +# include "vmsdir.h" +# endif /* HAVE_VMSDIR_H */ #endif /* In GNU systems, <dirent.h> defines this macro for us. */ @@ -92,7 +95,63 @@ dosify (filename) *df = 0; return dos_filename; } -#endif +#endif /* __MSDOS__ */ + +#ifdef VMS + +static int +vms_hash (name) + char *name; +{ + int h = 0; + int g; + + while (*name) + { + h = (h << 4) + *name++; + g = h & 0xf0000000; + if (g) + { + h = h ^ (g >> 24); + h = h ^ g; + } + } + return h; +} + +/* fake stat entry for a directory */ +static int +vmsstat_dir (name, st) + char *name; + struct stat *st; +{ + char *s; + int h; + DIR *dir; + + dir = opendir (name); + if (dir == 0) + return -1; + closedir (dir); + s = strchr (name, ':'); /* find device */ + if (s) + { + *s++ = 0; + st->st_dev = (char *)vms_hash (name); + } + else + { + st->st_dev = 0; + s = name; + } + h = vms_hash (s); + st->st_ino[0] = h & 0xff; + st->st_ino[1] = h & 0xff00; + st->st_ino[2] = h >> 16; + + return 0; +} +#endif /* VMS */ /* Hash table of directories. */ @@ -104,8 +163,12 @@ struct directory_contents { struct directory_contents *next; - int dev, ino; /* Device and inode numbers of this dir. */ - + dev_t dev; /* Device and inode numbers of this dir. */ +#ifdef VMS + ino_t ino[3]; +#else + ino_t ino; +#endif struct dirfile **files; /* Files in this directory. */ DIR *dirstream; /* Stream reading this directory. */ }; @@ -149,7 +212,8 @@ struct dirfile #define DIRFILE_BUCKETS 107 #endif -static int dir_contents_file_exists_p (); +static int dir_contents_file_exists_p PARAMS ((struct directory_contents *dir, char *filename)); +static struct directory *find_directory PARAMS ((char *name)); /* Find the directory named NAME and return its `struct directory'. */ @@ -160,6 +224,12 @@ find_directory (name) register unsigned int hash = 0; register char *p; register struct directory *dir; +#ifdef VMS + if ((*name == '.') && (*(name+1) == 0)) + name = "[]"; + else + name = vmsify (name,1); +#endif for (p = name; *p != '\0'; ++p) HASH (hash, *p); @@ -183,21 +253,41 @@ find_directory (name) /* The directory is not in the name hash table. Find its device and inode numbers, and look it up by them. */ +#ifdef VMS + if (vmsstat_dir (name, &st) < 0) +#else if (stat (name, &st) < 0) +#endif + { /* Couldn't stat the directory. Mark this by setting the `contents' member to a nil pointer. */ - dir->contents = 0; + dir->contents = 0; + } else { /* Search the contents hash table; device and inode are the key. */ struct directory_contents *dc; +#ifdef VMS + hash = ((unsigned int) st.st_dev << 16) + | ((unsigned int) st.st_ino[0] + + (unsigned int) st.st_ino[1] + + (unsigned int) st.st_ino[2]); +#else hash = ((unsigned int) st.st_dev << 16) | (unsigned int) st.st_ino; +#endif hash %= DIRECTORY_BUCKETS; for (dc = directories_contents[hash]; dc != 0; dc = dc->next) - if (dc->dev == st.st_dev && dc->ino == st.st_ino) + if (dc->dev == st.st_dev +#ifdef VMS + && dc->ino[0] == st.st_ino[0] + && dc->ino[1] == st.st_ino[1] + && dc->ino[2] == st.st_ino[2]) +#else + && dc->ino == st.st_ino) +#endif break; if (dc == 0) @@ -209,15 +299,23 @@ find_directory (name) /* Enter it in the contents hash table. */ dc->dev = st.st_dev; +#ifdef VMS + dc->ino[0] = st.st_ino[0]; + dc->ino[1] = st.st_ino[1]; + dc->ino[2] = st.st_ino[2]; +#else dc->ino = st.st_ino; +#endif dc->next = directories_contents[hash]; directories_contents[hash] = dc; dc->dirstream = opendir (name); if (dc->dirstream == 0) + { /* Couldn't open the directory. Mark this by setting the `files' member to a nil pointer. */ - dc->files = 0; + dc->files = 0; + } else { /* Allocate an array of buckets for files and zero it. */ @@ -257,19 +355,26 @@ dir_contents_file_exists_p (dir, filename) register struct dirent *d; if (dir == 0 || dir->files == 0) + { /* The directory could not be stat'd or opened. */ - return 0; - + return 0; + } #ifdef __MSDOS__ filename = dosify (filename); #endif +#ifdef VMS + filename = vmsify (filename,0); +#endif + hash = 0; if (filename != 0) { if (*filename == '\0') + { /* Checking if the directory exists. */ - return 1; + return 1; + } for (p = filename; *p != '\0'; ++p) HASH (hash, *p); @@ -278,16 +383,22 @@ dir_contents_file_exists_p (dir, filename) /* Search the list of hashed files. */ for (df = dir->files[hash]; df != 0; df = df->next) - if (streq (df->name, filename)) - return !df->impossible; + { + if (streq (df->name, filename)) + { + return !df->impossible; + } + } } /* The file was not found in the hashed list. Try to read the directory further. */ if (dir->dirstream == 0) + { /* The directory has been all read in. */ - return 0; + return 0; + } while ((d = readdir (dir->dirstream)) != 0) { @@ -309,11 +420,12 @@ dir_contents_file_exists_p (dir, filename) dir->files[newhash] = df; df->name = savestring (d->d_name, len); df->impossible = 0; - /* Check if the name matches the one we're searching for. */ if (filename != 0 && newhash == hash && streq (d->d_name, filename)) - return 1; + { + return 1; + } } /* If the directory has been completely read in, @@ -324,7 +436,6 @@ dir_contents_file_exists_p (dir, filename) closedir (dir->dirstream); dir->dirstream = 0; } - return 0; } @@ -355,9 +466,16 @@ file_exists_p (name) return ar_member_date (name) != (time_t) -1; #endif +#ifdef VMS + dirend = rindex (name, ']'); + dirend++; + if (dirend == (char *)1) + return dir_file_exists_p ("[]", name); +#else dirend = rindex (name, '/'); if (dirend == 0) return dir_file_exists_p (".", name); +#endif dirname = (char *) alloca (dirend - name + 1); bcopy (name, dirname, dirend - name); @@ -379,9 +497,16 @@ file_impossible (filename) register struct directory *dir; register struct dirfile *new; +#ifdef VMS + dirend = rindex (p, ']'); + dirend++; + if (dirend == (char *)1) + dir = find_directory ("[]"); +#else dirend = rindex (p, '/'); if (dirend == 0) dir = find_directory ("."); +#endif else { char *dirname = (char *) alloca (dirend - p + 1); @@ -401,7 +526,13 @@ file_impossible (filename) structure for it, but leave it out of the contents hash table. */ dir->contents = (struct directory_contents *) xmalloc (sizeof (struct directory_contents)); +#ifdef VMS + dir->contents->dev = 0; + dir->contents->ino[0] = dir->contents->ino[1] = + dir->contents->ino[2] = 0; +#else dir->contents->dev = dir->contents->ino = 0; +#endif dir->contents->files = 0; dir->contents->dirstream = 0; } @@ -436,9 +567,15 @@ file_impossible_p (filename) register struct directory_contents *dir; register struct dirfile *next; +#ifdef VMS + dirend = rindex (filename, ']'); + if (dirend == 0) + dir = find_directory ("[]")->contents; +#else dirend = rindex (filename, '/'); if (dirend == 0) dir = find_directory (".")->contents; +#endif else { char *dirname = (char *) alloca (dirend - filename + 1); @@ -455,6 +592,9 @@ file_impossible_p (filename) #ifdef __MSDOS__ p = filename = dosify (p); #endif +#ifdef VMS + p = filename = vmsify (p, 1); +#endif for (hash = 0; *p != '\0'; ++p) HASH (hash, *p); @@ -495,8 +635,15 @@ print_dir_data_base () if (dir->contents == 0) printf ("# %s: could not be stat'd.\n", dir->name); else if (dir->contents->files == 0) +#ifdef VMS + printf ("# %s (device %d, inode [%d,%d,%d]): could not be opened.\n", + dir->name, dir->contents->dev, + dir->contents->ino[0], dir->contents->ino[1], + dir->contents->ino[2]); +#else printf ("# %s (device %d, inode %d): could not be opened.\n", dir->name, dir->contents->dev, dir->contents->ino); +#endif else { register unsigned int f = 0, im = 0; @@ -508,8 +655,15 @@ print_dir_data_base () ++im; else ++f; +#ifdef VMS + printf ("# %s (device %d, inode [%d,%d,%d]): ", + dir->name, dir->contents->dev, + dir->contents->ino[0], dir->contents->ino[1], + dir->contents->ino[2]); +#else printf ("# %s (device %d, inode %d): ", dir->name, dir->contents->dev, dir->contents->ino); +#endif if (f == 0) fputs ("No", stdout); else @@ -557,15 +711,15 @@ struct dirstream }; /* Forward declarations. */ -static __ptr_t open_dirstream __P ((const char *)); -static struct dirent *read_dirstream __P ((__ptr_t)); +static __ptr_t open_dirstream PARAMS ((const char *)); +static struct dirent *read_dirstream PARAMS ((__ptr_t)); static __ptr_t open_dirstream (directory) const char *directory; { struct dirstream *new; - struct directory *dir = find_directory (directory); + struct directory *dir = find_directory ((char *)directory); if (dir->contents == 0 || dir->contents->files == 0) /* DIR->contents is nil if the directory could not be stat'd. |