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authorGleb Fotengauer-Malinovskiy <glebfm@altlinux.org>2021-03-02 18:33:46 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-03-24 10:26:31 +0300
commit7b7d2261aa8dce949c08d58ed1d02e54a0fbbab5 (patch)
treec0f9573078008081aed5ffdfe3627cc4b128a9a0 /drivers/misc/vmw_vmci
parentac41ae0b12c83229f2b1102c4ed9ad96bf8de946 (diff)
downloadlinux-7b7d2261aa8dce949c08d58ed1d02e54a0fbbab5.tar.xz
vmci_host: print unexpanded names of ioctl requests in debug messages
__stringify macro function expands its arguments, but in this messages we expect to see ioctl request name instead of it's _IOC macro expansion. $ cat stringify.c #include <stdio.h> #include <asm/ioctl.h> #define __stringify_1(x) #x #define __stringify(x) __stringify_1(x) #define VMCI_DO_IOCTL(ioctl_name) \ char *name = __stringify(IOCTL_VMCI_ ## ioctl_name); int main() { VMCI_DO_IOCTL(INIT_CONTEXT) printf("%s\n", name); } $ cc stringify.c $ ./a.out (((0U) << (((0+8)+8)+14)) | (((7)) << (0+8)) | (((0xa0)) << 0) | ((0) << ((0+8)+8))) Signed-off-by: Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org> Link: https://lore.kernel.org/r/20210302153346.300416-1-glebfm@altlinux.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/vmw_vmci')
-rw-r--r--drivers/misc/vmw_vmci/vmci_host.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/misc/vmw_vmci/vmci_host.c b/drivers/misc/vmw_vmci/vmci_host.c
index 2d8328d928d5..da1e2a773823 100644
--- a/drivers/misc/vmw_vmci/vmci_host.c
+++ b/drivers/misc/vmw_vmci/vmci_host.c
@@ -908,7 +908,7 @@ static long vmci_host_unlocked_ioctl(struct file *filp,
unsigned int iocmd, unsigned long ioarg)
{
#define VMCI_DO_IOCTL(ioctl_name, ioctl_fn) do { \
- char *name = __stringify(IOCTL_VMCI_ ## ioctl_name); \
+ char *name = "IOCTL_VMCI_" # ioctl_name; \
return vmci_host_do_ ## ioctl_fn( \
vmci_host_dev, name, uptr); \
} while (0)