[LTP] [PATCH 1/2] link05: Return on link() failure

[Petr Vorel]

If link() fails to be created, the following stat() failed:

link05.c:39: TBROK: stat(lkfile_1391822_1,0x7ffd61e5f000) failed: ENOENT (2)

Therefore skip testing and improve the error message:
5: link(lkfile_1404879, lkfile_1404879_5) failed: ENOENT (2)

Also fix cnt and nlinks condition.

Signed-off-by: Petr Vorel <pvorel@suse.cz>
---
@Xu, please merge your "link05: Convert docs to docparse" patchset [1]
first, I'll rebase my afterwards.

Kind regards,
Petr

[1] https://lore.kernel.org/ltp/20231108053122.GA1383908@pevik/

 testcases/kernel/syscalls/link/link05.c | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/testcases/kernel/syscalls/link/link05.c b/testcases/kernel/syscalls/link/link05.c
index 9b81ef3fd..1d708c6f6 100644
--- a/testcases/kernel/syscalls/link/link05.c
+++ b/testcases/kernel/syscalls/link/link05.c
@@ -22,13 +22,16 @@ static int nlinks = 1000;
 
 static void verify_link(void)
 {
-	int cnt;
+	int cnt = 0, created;
 	char lname[1024];
 	struct stat fbuf, lbuf;
 
-	for (cnt = 1; cnt < nlinks; cnt++) {
-		sprintf(lname, "%s_%d", fname, cnt);
-		TST_EXP_PASS_SILENT(link(fname, lname), "link(%s, %s)", fname, lname);
+	for (created = 1; created < nlinks; created++) {
+		sprintf(lname, "%s_%d", fname, created);
+		TST_EXP_PASS_SILENT(link(fname, lname), "%d: link(%s, %s)", created,
+							fname, lname);
+		if (!TST_PASS)
+			goto cleanup;
 	}
 
 	SAFE_STAT(fname, &fbuf);
@@ -48,13 +51,14 @@ static void verify_link(void)
 		}
 	}
 
-	if (cnt >= nlinks) {
+	if (cnt == nlinks) {
 		tst_res(TPASS,
 			 "link(%s, %s[1-%d]) ret %ld for %d files, stat linkcounts match %d",
 			 fname, fname, nlinks, TST_RET, nlinks, (int)fbuf.st_nlink);
 	}
 
-	for (cnt = 1; cnt < nlinks; cnt++) {
+cleanup:
+	for (cnt = 1; cnt < created; cnt++) {
 		sprintf(lname, "%s_%d", fname, cnt);
 		SAFE_UNLINK(lname);
 	}
-- 
2.42.0