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Diffstat (limited to 'test/syscalls/linux/uname.cc')
-rw-r--r--test/syscalls/linux/uname.cc14
1 files changed, 13 insertions, 1 deletions
diff --git a/test/syscalls/linux/uname.cc b/test/syscalls/linux/uname.cc
index 0a5d91017..d8824b171 100644
--- a/test/syscalls/linux/uname.cc
+++ b/test/syscalls/linux/uname.cc
@@ -41,6 +41,19 @@ TEST(UnameTest, Sanity) {
TEST(UnameTest, SetNames) {
SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN)));
+ char hostname[65];
+ ASSERT_THAT(sethostname("0123456789", 3), SyscallSucceeds());
+ EXPECT_THAT(gethostname(hostname, sizeof(hostname)), SyscallSucceeds());
+ EXPECT_EQ(absl::string_view(hostname), "012");
+
+ ASSERT_THAT(sethostname("0123456789\0xxx", 11), SyscallSucceeds());
+ EXPECT_THAT(gethostname(hostname, sizeof(hostname)), SyscallSucceeds());
+ EXPECT_EQ(absl::string_view(hostname), "0123456789");
+
+ ASSERT_THAT(sethostname("0123456789\0xxx", 12), SyscallSucceeds());
+ EXPECT_THAT(gethostname(hostname, sizeof(hostname)), SyscallSucceeds());
+ EXPECT_EQ(absl::string_view(hostname), "0123456789");
+
constexpr char kHostname[] = "wubbalubba";
ASSERT_THAT(sethostname(kHostname, sizeof(kHostname)), SyscallSucceeds());
@@ -54,7 +67,6 @@ TEST(UnameTest, SetNames) {
EXPECT_EQ(absl::string_view(buf.domainname), kDomainname);
// These should just be glibc wrappers that also call uname(2).
- char hostname[65];
EXPECT_THAT(gethostname(hostname, sizeof(hostname)), SyscallSucceeds());
EXPECT_EQ(absl::string_view(hostname), kHostname);