import source from 3.0.10HEADsubmit/trunk/20120831.082806accepted/trunk/20120905.182658master2.0alpha

Signed-off-by: Gui Chen <gui.chen@intel.com>

1 files changed, 269 insertions, 0 deletions

diff --git a/src/file.c b/src/file.c
new file mode 100644
index 0000000..cb8a94e
--- /dev/null
+++ b/src/file.c
@@ -0,0 +1,269 @@
+/* file.c - Additional file attributes
+
+   Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch>
+   Copyright (C) 1998 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de>
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+   On Debian systems, the complete text of the GNU General Public License
+   can be found in /usr/share/common-licenses/GPL-3 file.
+*/
+
+/* FAT32, VFAT, Atari format support, and various fixes additions May 1998
+ * by Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> */
+
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include <unistd.h>
+
+#define _LINUX_STAT_H		/* hack to avoid inclusion of <linux/stat.h> */
+#define _LINUX_STRING_H_	/* hack to avoid inclusion of <linux/string.h>*/
+#define _LINUX_FS_H             /* hack to avoid inclusion of <linux/fs.h> */
+
+# include <asm/types.h>
+
+#include <linux/msdos_fs.h>
+
+#include "common.h"
+#include "file.h"
+
+
+FDSC *fp_root = NULL;
+
+
+static void put_char(char **p,unsigned char c)
+{
+    if ((c >= ' ' && c < 0x7f) || c >= 0xa0) *(*p)++ = c;
+    else {
+	*(*p)++ = '\\';
+	*(*p)++ = '0'+(c >> 6);
+	*(*p)++ = '0'+((c >> 3) & 7);
+	*(*p)++ = '0'+(c & 7);
+    }
+}
+
+
+/**
+ * Construct the "pretty-printed" representation of the name in a short directory entry.
+ *
+ * @param[in]    fixed  Pointer to name[0] of a DIR_ENT
+ *
+ * @return  Pointer to static string containing pretty "8.3" equivalent of the
+ *          name in the directory entry.
+ */
+char *file_name(unsigned char *fixed)
+{
+    static char path[MSDOS_NAME*4+2];
+    char *p;
+    int i,j;
+
+    p = path;
+    for (i = j =  0; i < 8; i++)
+	if (fixed[i] != ' ') {
+	    while (j++ < i) *p++ = ' ';
+	    put_char(&p,fixed[i]);
+	}
+    if (strncmp(fixed+8,"   ",3)) {
+	*p++ = '.';
+	for (i = j =  0; i < 3; i++)
+	    if (fixed[i+8] != ' ') {
+		while (j++ < i) *p++ = ' ';
+		put_char(&p,fixed[i+8]);
+	    }
+    }
+    *p = 0;
+    return path;
+}
+
+
+int file_cvt(unsigned char *name,unsigned char *fixed)
+{
+    unsigned char c;
+    int size,ext,cnt;
+
+    size = 8;
+    ext = 0;
+    while (*name) {
+	c = *name;
+	if (c < ' ' || c > 0x7e || strchr("*?<>|\"/",c)) {
+	    printf("Invalid character in name. Use \\ooo for special "
+	      "characters.\n");
+	    return 0;
+	}
+	if (c == '.') {
+	    if (ext) {
+		printf("Duplicate dots in name.\n");
+		return 0;
+	    }
+	    while (size--) *fixed++ = ' ';
+	    size = 3;
+	    ext = 1;
+	    name++;
+	    continue;
+	}
+	if (c == '\\') {
+	    c = 0;
+	    for (cnt = 3; cnt; cnt--) {
+		if (*name < '0' || *name > '7') {
+		    printf("Invalid octal character.\n");
+		    return 0;
+		}
+		c = c*8+*name++-'0';
+	    }
+	    if (cnt < 4) {
+		printf("Expected three octal digits.\n");
+		return 0;
+	    }
+	    name += 3;
+	}
+	if (islower(c)) c = toupper(c);
+	if (size) {
+	    *fixed++ = c;
+	    size--;
+	}
+	name++;
+    }
+    if (*name || size == 8) return 0;
+    if (!ext) {
+	while (size--) *fixed++ = ' ';
+	size = 3;
+    }
+    while (size--) *fixed++ = ' ';
+    return 1;
+}
+
+
+void file_add(char *path,FD_TYPE type)
+{
+    FDSC **current,*walk;
+    char name[MSDOS_NAME];
+    char *here;
+
+    current = &fp_root;
+    if (*path != '/') die("%s: Absolute path required.",path);
+    path++;
+    while (1) {
+	if ((here = strchr(path,'/'))) *here = 0;
+	if (!file_cvt(path,name)) exit(2);
+	for (walk = *current; walk; walk = walk->next)
+	    if (!here && (!strncmp(name,walk->name,MSDOS_NAME) || (type ==
+	      fdt_undelete && !strncmp(name+1,walk->name+1,MSDOS_NAME-1))))
+		die("Ambiguous name: \"%s\"",path);
+	    else if (here && !strncmp(name,walk->name,MSDOS_NAME)) break;
+	if (!walk) {
+	    walk = alloc(sizeof(FDSC));
+	    strncpy(walk->name,name,MSDOS_NAME);
+	    walk->type = here ? fdt_none : type;
+	    walk->first = NULL;
+	    walk->next = *current;
+	    *current = walk;
+	}
+	current = &walk->first;
+	if (!here) break;
+	*here = '/';
+	path = here+1;
+    }
+}
+
+
+FDSC **file_cd(FDSC **curr,char *fixed)
+{
+    FDSC **walk;
+
+    if (!curr || !*curr) return NULL;
+    for (walk = curr; *walk; walk = &(*walk)->next)
+	if (!strncmp((*walk)->name,fixed,MSDOS_NAME) && (*walk)->first)
+	    return &(*walk)->first;
+    return NULL;
+}
+
+
+static FDSC **file_find(FDSC **dir,char *fixed)
+{
+    if (!dir || !*dir) return NULL;
+    if (*(unsigned char *) fixed == DELETED_FLAG) {
+	while (*dir) {
+	    if (!strncmp((*dir)->name+1,fixed+1,MSDOS_NAME-1) && !(*dir)->first)
+		return dir;
+	    dir = &(*dir)->next;
+	}
+	return NULL;
+    }
+    while (*dir) {
+	if (!strncmp((*dir)->name,fixed,MSDOS_NAME) && !(*dir)->first)
+	    return dir;
+	dir = &(*dir)->next;
+    }
+    return NULL;
+}
+
+
+/* Returns the attribute of the file FIXED in directory CURR or FDT_NONE if no
+   such file exists or if CURR is NULL. */
+FD_TYPE file_type(FDSC **curr,char *fixed)
+{
+    FDSC **this;
+
+    if ((this = file_find(curr,fixed))) return (*this)->type;
+    return fdt_none;
+}
+
+
+void file_modify(FDSC **curr,char *fixed)
+{
+    FDSC **this,*next;
+
+    if (!(this = file_find(curr,fixed)))
+	die("Internal error: file_find failed");
+    switch ((*this)->type) {
+	case fdt_drop:
+	    printf("Dropping %s\n",file_name(fixed));
+	    *(unsigned char *) fixed = DELETED_FLAG;
+	    break;
+	case fdt_undelete:
+	    *fixed = *(*this)->name;
+	    printf("Undeleting %s\n",file_name(fixed));
+	    break;
+	default:
+	    die("Internal error: file_modify");
+    }
+    next = (*this)->next;
+    free(*this);
+    *this = next;
+}
+
+
+static void report_unused(FDSC *this)
+{
+    FDSC *next;
+
+    while (this) {
+	next = this->next;
+	if (this->first) report_unused(this->first);
+	else if (this->type != fdt_none)
+		printf("Warning: did not %s file %s\n",this->type == fdt_drop ?
+		  "drop" : "undelete",file_name(this->name));
+	free(this);
+	this = next;
+    }
+}
+
+
+void file_unused(void)
+{
+    report_unused(fp_root);
+}