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print "mostly-printable" xattr strings in debugfs 

Taking a cue from getfattr... if a string is "mostly"
printable characters, go ahead & print as a string,
and escape what's left over.

so we get:

Extended attributes stored in inode body:
  selinux = "system_u:object_r:root_t:s0\000" (28)

instead of:

Extended attributes stored in inode body:
  selinux = "73 79 73 74 65 6d 5f 75 3a 6f 62 6a 65 63 74 5f 72 3a 72 6f 6f 74 5f 74 3a 73 30 00 " (28)

(selinux includes the trailing null in "len" so it
never prints as a string today)

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
bitmap-optimize
Eric Sandeen 2008-01-29 21:30:46 -06:00 committed by Theodore Ts'o
parent 3eed36b254
commit 290ac0e321
1 changed files with 9 additions and 7 deletions
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16
debugfs/debugfs.c
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@ -434,19 +434,21 @@ static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
static void dump_xattr_string(FILE *out, const char *str, int len)
{
int printable = 1;
int printable = 0;
int i;
/* check is string printable? */
/* check: is string "printable enough?" */
for (i = 0; i < len; i++)
if (!isprint(str[i])) {
printable = 0;
break;
}
if (isprint(str[i]))
printable++;
if (printable <= len*7/8)
printable = 0;
for (i = 0; i < len; i++)
if (printable)
fprintf(out, "%c", (unsigned char)str[i]);
fprintf(out, isprint(str[i]) ? "%c" : "\\%03o",
(unsigned char)str[i]);
else
fprintf(out, "%02x ", (unsigned char)str[i]);
}