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Casting the return value of a function to (void) doesn't ignore the
unused result warning with gcc. Use a #pragma to fix this properly, to
fix compilation with _FORTIFY_SOURCE.
Fixes: df23ab95f3d7 ("libcamera: process: fix compilation on Chromium OS")
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
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Add an error debug message when disassociating part of a process
execution context using unshare fails.
As this is currently used to isolate a child process which is
immediately terminated silently if unshare fails, add a debug printout
and propagate up the error code to make the failure more visible.
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
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The return value of a read() call is mistakenly checked for nonzero
rather than less than zero. Fix this.
Fixes: df23ab95f3d7 ("libcamera: process: fix compilation on Chromium OS")
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
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Commit 3d20beca6616 ("libcamera: Add Process and ProcessManager
classes") causes the build to fail in the Chromium OS build environment,
because the return values of some function calls marked with the
__warn_unused_result__ attribute are ignored. Fix this.
Fixes: 3d20beca6616 ("libcamera: Add Process and ProcessManager classes")
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Add a Process class to abstract a process, and a ProcessManager singleton
to monitor and manage the processes.
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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