diff target-utils/libtiffs/basicfind.c @ 0:e7502631a0f9

initial import from freecalypso-sw rev 1033:5ab737ac3ad7
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 11 Jun 2016 00:13:35 +0000
parents
children 87cb03b35f77
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/libtiffs/basicfind.c	Sat Jun 11 00:13:35 2016 +0000
@@ -0,0 +1,65 @@
+#include <sys/types.h>
+#include "types.h"
+#include "struct.h"
+#include "globals.h"
+#include "macros.h"
+
+extern char *index();
+
+static
+find_named_child(start, seekname)
+	char *seekname;
+{
+	int ino;
+	struct inode *irec;
+
+	for (ino = start; ino != 0xFFFF; ino = irec->sibling) {
+		irec = mpffs_active_index + ino;
+		if (!irec->type)
+			continue;
+		if (!strcmp(inode_to_dataptr(irec), seekname))
+			return(ino);
+	}
+	return(0);
+}
+
+mpffs_pathname_to_inode(pathname)
+	char *pathname;
+{
+	int ino, stat;
+	struct inode *irec;
+	char *cur, *next;
+
+	stat = mpffs_init();
+	if (stat < 0)
+		return(stat);
+	cur = pathname;
+	if (*cur == '/')
+		cur++;
+	for (ino = mpffs_root_ino; cur; cur = next) {
+		if (!*cur)
+			break;
+		next = index(cur, '/');
+		if (next == cur) {
+		    printf("malformed pathname: multiple adjacent slashes\n");
+			return(-1);
+		}
+		if (next)
+			*next++ = '\0';
+		irec = mpffs_active_index + ino;
+		if (irec->type != OBJTYPE_DIR) {
+			printf("Error: non-terminal non-directory\n");
+			if (next)
+				next[-1] = '/';
+			return(-1);
+		}
+		ino = find_named_child(irec->descend, cur);
+		if (next)
+			next[-1] = '/';
+		if (!ino) {
+			printf("Error: pathname component not found\n");
+			return(-1);
+		}
+	}
+	return(ino);
+}