[PATCH 3/5] testsuite: Do not provide finit_module(2) on older kernels
From: Michal Marek <hidden>
Date: 2014-02-27 22:52:26
Subsystem:
the rest · Maintainer:
Linus Torvalds
If the test's uname -r is less that 3.8, return -ENOSYS from finit_module(), so that the fallback is tested. --- testsuite/init_module.c | 25 +++++++++++++++++++++++++ 1 files changed, 25 insertions(+), 0 deletions(-)
diff --git a/testsuite/init_module.c b/testsuite/init_module.c
index 42177e7..96f4aa7 100644
--- a/testsuite/init_module.c
+++ b/testsuite/init_module.c@@ -37,6 +37,7 @@ #include <sys/types.h> #include <sys/stat.h> #include <sys/syscall.h> +#include <sys/utsname.h> #include <unistd.h> /* kmod_elf_get_section() is not exported, we need the private header */
@@ -280,6 +281,25 @@ long init_module(void *mem, unsigned long len, const char *args) return err; } +static int check_kernel_version(int major, int minor) +{ + struct utsname u; + const char *p; + int maj = 0, min = 0; + + if (uname(&u) < 0) + return false; + for (p = u.release; *p >= '0' && *p <= '9'; p++) + maj = maj * 10 + *p - '0'; + if (*p == '.') + for (p++; *p >= '0' && *p <= '9'; p++) + min = min * 10 + *p - '0'; + if (maj > major || (maj == major && min >= minor)) + return true; + return false; +} + + TS_EXPORT int finit_module(const int fd, const char *args, const int flags); int finit_module(const int fd, const char *args, const int flags)
@@ -289,6 +309,11 @@ int finit_module(const int fd, const char *args, const int flags) unsigned long len; struct stat st; + if (!check_kernel_version(3, 8)) { + stat("/old/kernel", &st); + errno = ENOSYS; + return -1; + } if (fstat(fd, &st) < 0) return -1;
--
1.7.3.1