File s390-tools-sles15-hmcdrvfs-fix-parsing-of-link-count.patch of Package s390-tools.14411

Subject: [PATCH] [BZ 164881] hmcdrvfs: fix parsing of link count >= 1000
From: Gerald Schaefer <gerald.schaefer@de.ibm.com>

Description:  hmcdrvfs: fix parsing of link count >= 1000
Symptom:      hmcdrvfs will ignore files with a link count >= 1000
Problem:      The parsing code relies on having spaces between the different
              fields in its input data. When a file has a link count >= 1000,
              there will be no space, and the "link count" field will be
              placed directly after the previous "mode" field. This will
              confuse the parser, and all such files will not be accesible.
Solution:     The "mode" field will never contain digits, so the parser can
              recognize the "link count" field by the presence of a digit.
Reproduction: Use a medium containing files with link count >= 1000 in
              hmcdrvfs, and try to access/list them.
Upstream-ID:  -
Problem-ID:   164881

Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
---
 hmcdrvfs/hmcdrvfs.c |    9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

--- a/hmcdrvfs/hmcdrvfs.c
+++ b/hmcdrvfs/hmcdrvfs.c
@@ -821,10 +821,13 @@ static char *hmcdrv_parse_line(char *lin
 		if ((*line != '\0') && (*line != '\n')) {
 			field = hmcdrv_parse_ntoken(field, line, &attr);
 
-			while ((*line != '\0') &&
-			       (*line != '\n') &&
-			       !isspace(*line))
+			while ((*line != '\0') && (*line != '\n')) {
+				if (isspace(*line))
+					break;
+				if (field == 1 && isdigit(*line))
+					break;
 				++line; /* search end of field */
+			}
 		}
 	} /* while */