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Deprecate ustat syscall interface

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As for sysctl, ustat has been deprecated in favor of {f}statfs.  Also
some newer ports which uses generic interface builds a stub version that
returns ENOSYS.

This patch deprecates ustat interface by removing ustat.h related headers,
adding a compatibility symbol, and avoiding new ports to build and provide
the symbol.

Checked on x86_64-linux-gnu and i686-linux-gnu.  Also checked with a
check-abi on all affected ABIs.

	* NEWS: Add ustat.h deprecation entry.
	* bits/ustat.h: Remove file.
	* misc/sys/ustat.h: Likewise.
	* misc/ustat.h: Likewise.
	* sysdeps/unix/sysv/linux/generic/ustat.c: Likewise.
	* misc/Makefile (headers): Remove ustat.h and sys/ustat.h.
	* misc/ustat.c (__ustat): Rename to __old_ustat and export only in
	compatibility mode.
	* sysdeps/unix/sysv/linux/ustat.c (__ustat): Likewise.
	* sysdeps/unix/sysv/linux/mips/ustat.c: Define DEV_TO_KDEV and use
	generic Linux implementation.
This commit is contained in:
Adhemerval Zanella
2018-03-18 11:28:59 +08:00
parent dc115e1cdc
commit cf2478d53a
10 changed files with 93 additions and 134 deletions
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21
sysdeps/unix/sysv/linux/mips/ustat.c
View File

@ -16,20 +16,13 @@
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <sys/ustat.h>
#include <sys/sysmacros.h>
#include <sysdep.h>
#include <sys/syscall.h>
#define DEV_TO_KDEV(__dev) \
({ \
unsigned long k_dev; \
k_dev = ((major (dev) & 0xff) << 8) | (minor (dev) & 0xff); \
k_dev; \
})
int
ustat (dev_t dev, struct ustat *ubuf)
{
unsigned long k_dev;
/* We must convert the value to dev_t type used by the kernel. */
k_dev = ((major (dev) & 0xff) << 8) | (minor (dev) & 0xff);
return INLINE_SYSCALL (ustat, 2, k_dev, ubuf);
}
#include <sysdeps/unix/sysv/linux/ustat.c>