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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 /include
parente7702cb56ec99521124befba3c52903842a885c1 (diff)
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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 'include')
-rw-r--r--include/sys/statfs.h7
1 files changed, 3 insertions, 4 deletions
diff --git a/include/sys/statfs.h b/include/sys/statfs.h
index 8a9f5a7b3b..756930a247 100644
--- a/include/sys/statfs.h
+++ b/include/sys/statfs.h
@@ -6,12 +6,11 @@
 /* Now define the internal interfaces.  */
 extern int __statfs (const char *__file, struct statfs *__buf);
 libc_hidden_proto (__statfs)
-extern int __fstatfs (int __fildes, struct statfs *__buf)
-     attribute_hidden;
+extern int __fstatfs (int __fildes, struct statfs *__buf);
+libc_hidden_proto (__fstatfs)
 extern int __statfs64 (const char *__file, struct statfs64 *__buf)
      attribute_hidden;
-extern int __fstatfs64 (int __fildes, struct statfs64 *__buf)
-     attribute_hidden;
+extern int __fstatfs64 (int __fildes, struct statfs64 *__buf);
 
 # endif /* !_ISOMAC */
 #endif