On Thu, Oct 28, 2021 at 03:56:28PM -0300, Gabriel Krisman Bertazi wrote: > Guenter Roeck <linux@xxxxxxxxxxxx> writes: > > > On Mon, Oct 18, 2021 at 09:00:14PM -0300, Gabriel Krisman Bertazi wrote: > >> Introduce an example of a FAN_FS_ERROR fanotify user to track filesystem > >> errors. > >> > >> Reviewed-by: Amir Goldstein <amir73il@xxxxxxxxx> > >> Signed-off-by: Gabriel Krisman Bertazi <krisman@xxxxxxxxxxxxx> > >> Reviewed-by: Jan Kara <jack@xxxxxxx> > >> --- > >> Changes since v4: > >> - Protect file_handle defines with ifdef guards > >> > >> Changes since v1: > >> - minor fixes > >> --- > >> samples/Kconfig | 9 +++ > >> samples/Makefile | 1 + > >> samples/fanotify/Makefile | 5 ++ > >> samples/fanotify/fs-monitor.c | 142 ++++++++++++++++++++++++++++++++++ > >> 4 files changed, 157 insertions(+) > >> create mode 100644 samples/fanotify/Makefile > >> create mode 100644 samples/fanotify/fs-monitor.c > >> > >> diff --git a/samples/Kconfig b/samples/Kconfig > >> index b0503ef058d3..88353b8eac0b 100644 > >> --- a/samples/Kconfig > >> +++ b/samples/Kconfig > >> @@ -120,6 +120,15 @@ config SAMPLE_CONNECTOR > >> with it. > >> See also Documentation/driver-api/connector.rst > >> > >> +config SAMPLE_FANOTIFY_ERROR > >> + bool "Build fanotify error monitoring sample" > >> + depends on FANOTIFY > > > > This needs something like > > depends on CC_CAN_LINK > > or possibly even > > depends on CC_CAN_LINK && HEADERS_INSTALL > > to avoid compilation errors such as > > > > samples/fanotify/fs-monitor.c:7:10: fatal error: errno.h: No such file or directory > > 7 | #include <errno.h> > > | ^~~~~~~~~ > > compilation terminated. > > > > when using a toolchain without C library support, such as those provided > > on kernel.org. > > Thank you, Guenter. > > We discussed this, but I wasn't sure how to silence the error and it > didn't trigger in the past versions. > > The original patch is already in Jan's tree. Jan, would you pick the > pack below to address it? Feel free to squash it into the original > commit, if you think it is saner.. > > Thanks, > > -- >8 -- > From: Gabriel Krisman Bertazi <krisman@xxxxxxxxxxxxx> > Date: Thu, 28 Oct 2021 15:34:46 -0300 > Subject: [PATCH] samples: Make fs-monitor depend on libc and headers > > Prevent build errors when headers or libc are not available, such as on > kernel build bots, like the below: > > samples/fanotify/fs-monitor.c:7:10: fatal error: errno.h: No such file > or directory > 7 | #include <errno.h> > | ^~~~~~~~~ > > Suggested-by: Guenter Roeck <linux@xxxxxxxxxxxx> > Signed-off-by: Gabriel Krisman Bertazi <krisman@xxxxxxxxxxxxx> Tested-by: Guenter Roeck <linux@xxxxxxxxxxxx> > --- > samples/Kconfig | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/samples/Kconfig b/samples/Kconfig > index 88353b8eac0b..56539b21f2c7 100644 > --- a/samples/Kconfig > +++ b/samples/Kconfig > @@ -122,7 +122,7 @@ config SAMPLE_CONNECTOR > > config SAMPLE_FANOTIFY_ERROR > bool "Build fanotify error monitoring sample" > - depends on FANOTIFY > + depends on FANOTIFY && CC_CAN_LINK && HEADERS_INSTALL > help > When enabled, this builds an example code that uses the > FAN_FS_ERROR fanotify mechanism to monitor filesystem > -- > 2.33.0
