tests: add readlink.test and readlinkat.test

* tests/readlink.c: New file.
* tests/readlink.awk: Likewise.
* tests/readlinkat.c: Likewise.
* tests/readlinkat.awk: Likewise.
* tests/readlink.test: New test.
* tests/readlinkat.test: Likewise.
* tests/Makefile.am (check_PROGRAMS): Add readlink and readlinkat.
(TESTS): Add readlink.test and readlinkat.test.
(EXTRA_DIST): Add readlink.awk and readlinkat.awk.
* tests/.gitignore: Add readlink and readlinkat.

tests/.gitignore

@@ -24,6 +24,8 @@ oldselect
 pc
 pipe
 ppoll
+readlink
+readlinkat
 sched_xetattr
 scm_rights
 seccomp

tests/Makefile.am

@@ -35,6 +35,8 @@ check_PROGRAMS = \
 	pc \
 	pipe \
 	ppoll \
+	readlink \
+	readlinkat \
 	sched_xetattr \
 	scm_rights \
 	seccomp \
@@ -87,6 +89,8 @@ TESTS = \
 	ipc_msg.test \
 	ipc_shm.test \
 	ipc_sem.test \
+	readlink.test \
+	readlinkat.test \
 	sched_xetattr.test \
 	scm_rights-fd.test \
 	seccomp.test \
@@ -159,6 +163,8 @@ EXTRA_DIST = init.sh run.sh match.awk \
 	     pipe.expected \
 	     ppoll.expected \
 	     ppoll-v.expected \
+	     readlink.awk \
+	     readlinkat.awk \
 	     restart_syscall.expected \
 	     restart_syscall_unknown.expected \
 	     select.awk \

tests/readlink.awk

@@ -0,0 +1,10 @@
+BEGIN {
+	pathname = "\\\\x72\\\\x65\\\\x61\\\\x64\\\\x6c\\\\x69\\\\x6e\\\\x6b\\\\x2e\\\\x6c\\\\x69\\\\x6e\\\\x6b"
+	buf = "\\\\x72\\\\x65\\\\x61"
+	r[1] = "^readlink\\(\"" pathname "\", \"" buf "\"\\.\\.\\., 31\\) += 10"
+	r[2] = "^\\+\\+\\+ exited with 0 \\+\\+\\+$"
+	lines = 2
+	fail = 0
+}
+
+@include "match.awk"

tests/readlink.c

@@ -0,0 +1,17 @@
+#include <unistd.h>
+#include <sys/syscall.h>
+
+int
+main(void)
+{
+#ifdef __NR_readlink
+	char buf[31];
+
+	if (syscall(__NR_readlink, "readlink.link", buf, sizeof(buf)) != 10)
+		return 77;
+
+	return 0;
+#else
+	return 77;
+#endif
+}

tests/readlink.test

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+# Check readlink syscall decoding.
+
+. "${srcdir=.}/init.sh"
+
+ln -sf readlink.c readlink.link ||
+	framework_skip_ 'failed to create a symlink'
+
+run_prog
+run_strace -e readlink -xx -s3 $args
+match_awk
+
+rm -f readlink.link
+
+exit 0

tests/readlinkat.awk

@@ -0,0 +1,10 @@
+BEGIN {
+	pathname = "\\\\x72\\\\x65\\\\x61\\\\x64\\\\x6c\\\\x69\\\\x6e\\\\x6b\\\\x61\\\\x74\\\\x2e\\\\x6c\\\\x69\\\\x6e\\\\x6b"
+	buf = "\\\\x72\\\\x65\\\\x61"
+	r[1] = "^readlinkat\\(AT_FDCWD, \"" pathname "\", \"" buf "\"\\.\\.\\., 31\\) += 12"
+	r[2] = "^\\+\\+\\+ exited with 0 \\+\\+\\+$"
+	lines = 2
+	fail = 0
+}
+
+@include "match.awk"

tests/readlinkat.c

@@ -0,0 +1,18 @@
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/syscall.h>
+
+int
+main(void)
+{
+#ifdef __NR_readlinkat
+	char buf[31];
+
+	if (syscall(__NR_readlinkat, AT_FDCWD, "readlinkat.link", buf, sizeof(buf)) != 12)
+		return 77;
+
+	return 0;
+#else
+	return 77;
+#endif
+}

tests/readlinkat.test

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+# Check readlinkat syscall decoding.
+
+. "${srcdir=.}/init.sh"
+
+ln -sf readlinkat.c readlinkat.link ||
+	framework_skip_ 'failed to create a symlink'
+
+run_prog
+run_strace -e readlinkat -xx -s3 $args
+match_awk
+
+rm -f readlinkat.link
+
+exit 0