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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2021-02-05 21:26:57 +0000
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2021-02-11 08:00:11 -0300
commitf6e616435d885afef1761a407ed0ae1256293bf8 (patch)
tree37622732da897e54ea50cd3988b0acd666aca4b6 /string/string-inlines.c
parent1bfbaf7130133ae740c09e12dfdd87df26e03d39 (diff)
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linux: Consolidate statfs implementations
The __NR_statfs64 syscall is supported on all architectures but
aarch64, mips64, riscv64, and x86_64.  And newer ABIs also uses
the new statfs64 interface (where the struct size is used as
second argument).

So the default implementation now uses:

  1. __NR_statfs64 for non-LFS call and handle overflow directly
     There is no need to handle __NR_statfs since all architectures
     that only support are LFS only.

  2. __NR_statfs if defined or __NR_statfs64 otherwise for LFS
     call.

Alpha is the only outlier, since it is a 64-bit architecture which
provides non-LFS interface and only provides __NR_statfs64 on
newer kernels (v5.1+).

Checked on x86_64-linux-gnu.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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