FreeCalypso > hg > freecalypso-reveng
changeset 45:18472a2ccf55
pirollback: pathname reconstruction implemented
| author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
|---|---|
| date | Sat, 06 Jul 2013 22:06:38 +0000 |
| parents | 074237879eca |
| children | 78ac405716db |
| files | .hgignore pirollback/Makefile pirollback/inopath.c pirollback/pathname.c pirollback/pathname.h |
| diffstat | 5 files changed, 97 insertions(+), 1 deletions(-) [+] |
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--- a/.hgignore Sat Jul 06 21:31:55 2013 +0000 +++ b/.hgignore Sat Jul 06 22:06:38 2013 +0000 @@ -14,3 +14,4 @@ ^mysteryffs/scan1$ ^pirollback/analyze$ +^pirollback/inopath$
--- a/pirollback/Makefile Sat Jul 06 21:31:55 2013 +0000 +++ b/pirollback/Makefile Sat Jul 06 22:06:38 2013 +0000 @@ -1,13 +1,17 @@ CC= gcc CFLAGS= -O2 -PROGS= analyze +PROGS= analyze inopath ANALYZE_OBJS= analyze.o checknames.o init.o treewalk.o +INOPATH_OBJS= checknames.o init.o inopath.o pathname.o treewalk.o all: ${PROGS} analyze: ${ANALYZE_OBJS} ${CC} -o $@ ${ANALYZE_OBJS} +inopath: ${INOPATH_OBJS} + ${CC} -o $@ ${INOPATH_OBJS} + clean: rm -f *.o *.out *errs ${PROGS}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/pirollback/inopath.c Sat Jul 06 22:06:38 2013 +0000 @@ -0,0 +1,37 @@ +#include <stdio.h> +#include <stdlib.h> +#include "pathname.h" + +extern char *imgfile; +extern int last_inode; + +main(argc, argv) + char **argv; +{ + int ino; + char *strtoul_endp; + char pathname[PATHNAME_BUF_SIZE]; + + if (argc != 3) { +usage: fprintf(stderr, "usage: %s ffs-image inode\n", argv[0]); + exit(1); + } + imgfile = argv[1]; + ino = strtoul(argv[2], &strtoul_endp, 16); + if (!argv[2][0] || *strtoul_endp) + goto usage; + read_img_file(); + read_inodes(); + if (ino < 1 || ino > last_inode) { + fprintf(stderr, "%s: bad inode number specified\n", argv[0]); + exit(1); + } + walk_tree(); + check_object_names(); + if (pathname_of_inode(ino, pathname) < 0) { + fprintf(stderr, "unable to get the pathname\n"); + exit(1); + } + printf("%s\n", pathname); + exit(0); +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/pirollback/pathname.c Sat Jul 06 22:06:38 2013 +0000 @@ -0,0 +1,53 @@ +#include <sys/types.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <strings.h> +#include "types.h" +#include "struct.h" +#include "pathname.h" + +extern struct inode_info inode[]; + +pathname_of_inode(ino, pnbuf) + char *pnbuf; +{ + int level, revpath[MAX_DIR_NEST]; + struct inode_info *inf; + char *op; + + for (level = 0; ino != 1; ino = inode[ino].parent) { + if (!inode[ino].parent) + return(-1); + if (level >= MAX_DIR_NEST) + return(-1); + revpath[level++] = ino; + } + op = pnbuf; + *op++ = '/'; + while (level) { + level--; + inf = inode + revpath[level]; + switch (inf->type) { + case 0xE1: + case 0xF1: + /* good only for the last component */ + if (!level) + break; + else + return(-1); + case 0xF2: + /* good for all components */ + break; + default: + /* bad */ + return(-1); + } + strcpy(op, inf->dataptr); + op += strlen(inf->dataptr); + if (inf->type == 0xF2) + *op++ = '/'; + } + *op = '\0'; + return(0); +}