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Remove the meaningless '_d' suffix.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reviewed-by: Marco Felsch <m.felsch@pengutronix.de>
Link: https://lore.barebox.org/20221214123512.189688-6-s.hauer@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The '_d' suffix was originally introduced in case we want to import
Linux struct device as a separate struct into barebox. Over time it
became clear that this won't happen, instead barebox struct device_d
is basically the same as Linux struct device. Rename the struct name
accordingly to make porting Linux code easier.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reviewed-by: Marco Felsch <m.felsch@pengutronix.de>
Link: https://lore.barebox.org/20221214123512.189688-3-s.hauer@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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loff_t is the correct type for file sizes. Use it to allow to truncate
to sizes bigger than 32bit.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Returning requested offset from .lseek() callback doesn't really give
us any new information while bringing unnecessary
complications. Change all .lseek() types (both in struct struct
cdev_operations and in struct fs_driver_d) to return 'int' and adjust
the rest of the codebase accordingly.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Instead on relying on driver callbacks to update 'pos' in FILE, do it
as a part of lseek() code. This allows us to drop a bit of repeating
code as well as making lseek() implementation consistent with write()
and read().
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Returning -ENOSYS as a result of truncate() breaks ability to write to
semihosting host's filesystem, so change the return value to 0. This
shouldn't cause any problems since all of the funcionlaity of
truncate() should is already handled by 'open' (via O_TRUNC) and
'write' (will automatically grow the file size when writing)
automatically
Unfortunately this was missed in original commit that introduced
semihosting
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Add semihosting API implementation and implement a filesystem driver
to access debugging host filesystem using it.
Tested on Freescale SabreSD board (i.MX6Q) using OpenOCD
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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