test 56: --- - +++ /home/salinger/tar-1.26/tests/testsuite.dir/at-groups/56/stderr
@@ -1,2 +1,5 @@ +tar: Cannot get working directory: Permission denied tar: a: Directory is new +tar: Cannot get working directory: Permission denied +tar: Cannot get working directory: Permission denied 56. listed03.at:22: 56. incremental dump when the parent directory is unreadable (listed03.at:22): FAILED (listed03.at:25) The tar tries to use getcwd, but in the pathname the parent dir is unreadable. According to http://pubs.opengroup.org/onlinepubs/9699919799/functions/getcwd.html If a program is operating in a directory where some (grand)parent directory does not permit reading, getcwd() may fail, as in most implementations it must read the directory to determine the name of the file. The implementation of getcwd under GNU/kFreeBSD uses a kernel cache, and eventually tries to get it by traversing. Usually kernel cache succeeds in natively mounted dirs, and fails in bind/nullfs mounted dir. strace under Linux: openat(AT_FDCWD, "a", O_RDONLY|O_NOCTTY|O_NONBLOCK|O_DIRECTORY|O_NOFOLLOW|O_CLOEXEC) = 5 fstat(5, {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 newfstatat(5, "file", {st_mode=S_IFREG|0644, st_size=4, ...}, AT_SYMLINK_NOFOLLOW) = 0 openat(5, "file", O_RDONLY|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW|O_CLOEXEC) = 6 fstat(6, {st_mode=S_IFREG|0644, st_size=4, ...}) = 0 write(1, "a/file\n", 7) = 7 read(6, "bla\n", 4) = 4 fstat(6, {st_mode=S_IFREG|0644, st_size=4, ...}) = 0 close(6) = 0 getcwd("/home/petrsa/trash/tar-1.26/dir/sub", 4096) = 36 ktrace under GNU/kFreeBSD: 60863 tar CALL fstatat(0xffffff9c,0x64c2d0,0x7fffffffe180,0x200) 60863 tar NAMI "a" 60863 tar STRU invalid record 60863 tar RET fstatat 0 60863 tar CALL openat(0xffffff9c,0x64c2d0,0x8104,0) 60863 tar NAMI "a" 60863 tar RET openat 5 60863 tar CALL fstat(0x5,0x7fffffffe1d0) 60863 tar STRU invalid record 60863 tar RET fstat 0 60863 tar CALL fstat(0x5,0x7fffffffdd60) 60863 tar STRU invalid record 60863 tar RET fstat 0 60863 tar CALL fcntl(0x5,<invalid=3>,0) 60863 tar RET fcntl 4 60863 tar CALL fcntl(0x5,<invalid=2>,FD_CLOEXEC) 60863 tar RET fcntl 0 60863 tar CALL getdents(0x5,0x651180,0x8000) 60863 tar RET getdents 512/0x200 60863 tar CALL getdents(0x5,0x651180,0x8000) 60863 tar RET getdents 0 60863 tar CALL __getcwd(0x7fffffffd440,0x400) 60863 tar NAMI ".." 60863 tar RET __getcwd -1 errno 13 Permission denied .. 60863 tar CALL open(0x800b99e7e,O_NONBLOCK,<unused>0) 60863 tar NAMI ".." 60863 tar RET open -1 errno 13 Permission denied 60863 tar CALL write(0x2,0x7fffffffb3f0,0x7) 60863 tar GIO fd 2 wrote 7 bytes "./tar: " 60863 tar RET write 7 60863 tar CALL write(0x2,0x7fffffffb470,0x1c) 60863 tar GIO fd 2 wrote 28 bytes "Cannot get working directory" 60863 tar RET write 28/0x1c 60863 tar CALL write(0x2,0x7fffffffaf60,0x13) 60863 tar GIO fd 2 wrote 19 bytes ": Permission denied" Back-trace up-to getcwd() #3 0x00000000004180fa in normalize_filename (name=0x64c600 "a") at misc.c:298 #4 0x00000000004129d6 in attach_directory (name=<value optimized out>, mtime=..., dev=184614661, ino=17522742, nfs=false, found=false, contents=0x64c610 "Yfile") at incremen.c:282 #5 note_directory (name=<value optimized out>, mtime=..., dev=184614661, ino=17522742, nfs=false, found=false, contents=0x64c610 "Yfile") at incremen.c:312 #6 0x0000000000414b4e in read_incr_db_2 () at incremen.c:1262 #7 read_directory_file () at incremen.c:1338 #8 0x000000000041a33c in collect_and_sort_names () at names.c:959 #9 0x000000000040ca22 in create_archive () at create.c:1321 #10 0x0000000000404925 in main (argc=<value optimized out>, argv=<value optimized out>) at tar.c:2646 -- To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
