From 9695ea005d4af93dcd60f74f10fd3c54499a182f Mon Sep 17 00:00:00 2001
From: Nicholas Noll <nbnoll@eml.cc>
Date: Thu, 11 Nov 2021 16:31:58 -0800
Subject: chore: split up base library into individual files for smaller
 binaries

---
 sys/base/fs.c | 192 ----------------------------------------------------------
 1 file changed, 192 deletions(-)
 delete mode 100644 sys/base/fs.c

(limited to 'sys/base/fs.c')

diff --git a/sys/base/fs.c b/sys/base/fs.c
deleted file mode 100644
index 6d5ee0f..0000000
--- a/sys/base/fs.c
+++ /dev/null
@@ -1,192 +0,0 @@
-#include <u.h>
-#include <base.h>
-#include <base/macro/map.h>
-#include <dirent.h>
-
-/*
- * path history
- */
-struct Key
-{
-    ino_t ino;
-    dev_t dev;
-};
-
-#define hash(k) ((int32)k.ino ^ (int32)k.dev)
-#define equal(k1, k2) (k1.ino == k2.ino && k1.dev == k2.dev)
-
-struct fs·History
-{
-    SET_STRUCT_BODY(struct Key);
-};
-
-static
-int
-morehistory(fs·History *h, int n)
-{
-    SET_GROW(h, struct Key, n, hash, sys·Memory, nil);
-}
-
-static
-int
-addentry(fs·History *h, struct Key key, int *err)
-{
-    SET_PUT(h, key, hash, equal, morehistory, err);
-}
-
-static
-void
-forget(fs·History *h)
-{
-    if (!h)
-        return;
-
-    SET_RESET(h);
-}
-
-static
-void
-delete(fs·History *h)
-{
-    SET_FREE(h, sys·Memory, nil);
-}
-
-#undef hash
-#undef equal
-
-static
-char *
-strcpyn(char *dst, char *src, int n)
-{
-    while(*src && n-- > 0)
-        *dst++ = *src++;
-
-    *dst = 0;
-    return dst;
-}
-
-/*
- * main functions
- */
-
-int
-fs·init(fs·Walker *fs, char *path)
-{
-    fs->base = fs->end = fs->path;
-
-    if (!path || !path[0]) {
-        path = getcwd(fs->path, arrlen(fs->path));
-        if (!path)
-            return 1;
-        fs->end += strlen(path);
-    } else 
-        fs->end = strcpyn(fs->base, path, arrlen(fs->path));
-
-    if (fs->path[0] != '/')
-        fs->fd = AT_FDCWD;
-
-    if (!fs->hist && !(fs->flags & fs·nolinks))
-        fs->hist = calloc(1, sizeof(*fs->hist));
-
-    return 0;
-}
-
-void
-fs·fini(fs·Walker *fs)
-{
-    if (fs->hist) {
-        delete(fs->hist);
-        free(fs->hist);
-    }
-}
-
-void
-fs·walk(fs·Walker *fs)
-{
-    char *e, *b;
-    DIR *dir;
-    int new, fd, ofd, flags;
-    fs·History *h;
-    struct dirent *d;
-    io·Stat cwd;
-    struct fs·Entry *it;
-
-    flags = 0;
-    if(fs->flags & fs·nolinks)
-        flags |= AT_SYMLINK_NOFOLLOW;
-
-    /* get info for base relative to current fd */
-    if(fstatat(fs->fd, fs->base, &cwd, flags) < 0){
-        if(fs->flags & fs·verbose)
-            errorf("stat: %s", fs->path);
-        return;
-    }
-
-    /* if we hit a file, finish! */
-    if(!S_ISDIR(cwd.st_mode)) {
-        fs->func(fs->data, fs->base, fs->path, &cwd);
-        return;
-    }
-
-    /* have we been here before? (cycle detection) */
-    /* if not, add to our path history */
-    if (!(fs->flags & fs·nolinks)) {
-        addentry(fs->hist, (struct Key){.dev=cwd.st_dev, .ino=cwd.st_ino}, &new);
-        if (!new)
-            return;
-    }
-
-    /* 
-     * operate on directory first if preorder traversal 
-     * truncate recursion if callback returns an error code
-     */ 
-    if (fs->flags & fs·preorder) {
-        if (fs->func(fs->data, fs->base, fs->path, &cwd))
-            return;
-    }
-
-    /* open directory */
-    if(!fs->max || fs->lev + 1 < fs->max) {
-        fd = openat(fs->fd, fs->base, O_RDONLY | O_CLOEXEC | O_DIRECTORY);
-        if (fd < 0)
-            errorf("open %s:", fs->path);
-
-        if (!(dir=fdopendir(fd))) {
-            if(fs->flags & fs·verbose)
-                errorf("fdopendir: %s", fs->path);
-            return;
-        }
-
-        ofd = fs->fd, fs->fd = fd;
-
-        /* traverse children */
-        e = fs->end, b = fs->base;
-        if (fs->end[-1] != '/')
-            *fs->end++ = '/';
-
-        fs->base = fs->end;
-        while((d = readdir(dir))) {
-            if (*d->d_name == '.') 
-            if (d->d_name[1] == 0 ||                       /* . */ 
-               (d->d_name[1] == '.' && d->d_name[2] == 0)) /* .. */ 
-                continue;
-
-            fs->end = strcpyn(fs->base, d->d_name, arrend(fs->path) - fs->base);
-
-            fs->lev++;
-            fs·walk(fs);
-            fs->lev--;
-        }
-        *e      = 0;
-        fs->fd  = ofd;
-        fs->end = e, fs->base = b;
-        closedir(dir);
-    }
-
-    /* operate on directory if postorder (default) traversal */
-    if (!(fs->flags & fs·preorder))
-        fs->func(fs->data, fs->base, fs->path, &cwd);
-
-    if (!fs->lev)
-        forget(fs->hist);
-}
-- 
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