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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2021-02-05 20:13:58 +0000
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2021-02-11 07:58:31 -0300
commit1bfbaf7130133ae740c09e12dfdd87df26e03d39 (patch)
tree6ce35b86fe247629bf6bb2dcdf4413fbaaf5d0a6 /sysdeps/unix/sysv/linux/fixup-asm-unistd.h
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linux: Consolidate fstatfs implementations
The __NR_fstatfs64 syscall is supported on all architectures but
aarch64, mips64, riscv64, and x86_64.  And newer ABIs also uses
the new fstatfs64 interface (where the struct size is used as
first argument).

So the default implementation now uses:

  1. __NR_fstatfs64 for non-LFS call and handle overflow directly
     There is no need to handle __NR_fstatfs since all architectures
     that only support are LFS only.

  2. __NR_fstatfs if defined or __NR_fstatfs64 otherwise for LFS
     call.

Alpha is the only outlier, it is a 64-bit architecture which
provides non-LFS interface and only provides __NR_fstatfs64 on
newer kernels (5.1+).

Checked on x86_64-linux-gnu.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Diffstat (limited to 'sysdeps/unix/sysv/linux/fixup-asm-unistd.h')
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