linux-kernel - [PATCH v1 10/17] selftests/nolibc: rename euid0 variable to is

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Message-Id: <9547ea8320074269751eb4e54bcbd1395e66c5f5.1687344643.git.falcon@tinylab.org>
Date:   Wed, 21 Jun 2023 21:05:49 +0800
From:   Zhangjin Wu <falcon@...ylab.org>
To:     w@....eu
Cc:     thomas@...ch.de, arnd@...db.de, falcon@...ylab.org,
        linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org
Subject: [PATCH v1 10/17] selftests/nolibc: rename euid0 variable to is_root

More conditional variables will be added, let's rename them with more
meaningful 'has_' or 'is_' prefix.

euid0 is converted to is_root to indicate whether or not running as
root.

Signed-off-by: Zhangjin Wu <falcon@...ylab.org>
---
 tools/testing/selftests/nolibc/nolibc-test.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/selftests/nolibc/nolibc-test.c
index 929d43b95acc..69f59a395746 100644
--- a/tools/testing/selftests/nolibc/nolibc-test.c
+++ b/tools/testing/selftests/nolibc/nolibc-test.c
@@ -543,7 +543,7 @@ int run_syscall(int min, int max)
 	struct timeval tv;
 	struct timezone tz;
 	struct stat stat_buf;
-	int euid0;
+	int is_root;
 	int has_proc;
 	int test;
 	int tmp;
@@ -555,7 +555,7 @@ int run_syscall(int min, int max)
 	has_proc = stat("/proc", &stat_buf) == 0;
 
 	/* this will be used to skip certain tests that can't be run unprivileged */
-	euid0 = geteuid() == 0;
+	is_root = geteuid() == 0;
 
 	/* from 2.30, glibc provides gettid() */
 #if defined(__GLIBC_MINOR__) && defined(__GLIBC__)
@@ -585,7 +585,7 @@ int run_syscall(int min, int max)
 		CASE_TEST(chmod_net);         EXPECT_SYSZR(has_proc, chmod("/proc/self/net", 0555)); break;
 		CASE_TEST(chmod_self);        EXPECT_SYSER(has_proc, chmod("/proc/self", 0555), -1, EPERM); break;
 		CASE_TEST(chown_self);        EXPECT_SYSER(has_proc, chown("/proc/self", 0, 0), -1, EPERM); break;
-		CASE_TEST(chroot_root);       EXPECT_SYSZR(euid0, chroot("/")); break;
+		CASE_TEST(chroot_root);       EXPECT_SYSZR(is_root, chroot("/")); break;
 		CASE_TEST(chroot_blah);       EXPECT_SYSER(1, chroot("/proc/self/blah"), -1, ENOENT); break;
 		CASE_TEST(chroot_exe);        EXPECT_SYSER(has_proc, chroot("/proc/self/exe"), -1, ENOTDIR); break;
 		CASE_TEST(close_m1);          EXPECT_SYSER(1, close(-1), -1, EBADF); break;
@@ -607,7 +607,7 @@ int run_syscall(int min, int max)
 		CASE_TEST(ioctl_tiocinq);     EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break;
 		CASE_TEST(link_root1);        EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break;
 		CASE_TEST(link_blah);         EXPECT_SYSER(1, link("/proc/self/blah", "/blah"), -1, ENOENT); break;
-		CASE_TEST(link_dir);          EXPECT_SYSER(euid0, link("/", "/blah"), -1, EPERM); break;
+		CASE_TEST(link_dir);          EXPECT_SYSER(is_root, link("/", "/blah"), -1, EPERM); break;
 		CASE_TEST(link_cross);        EXPECT_SYSER(has_proc, link("/proc/self/net", "/blah"), -1, EXDEV); break;
 		CASE_TEST(lseek_m1);          EXPECT_SYSER(1, lseek(-1, 0, SEEK_SET), -1, EBADF); break;
 		CASE_TEST(lseek_0);           EXPECT_SYSER(1, lseek(0, 0, SEEK_SET), -1, ESPIPE); break;
-- 
2.25.1