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Date: Sun, 13 Sep 2020 12:49:48 -0300
From: Érico Rolim <erico.erc@...il.com>
To: mtk.manpages@...il.com
Cc: linux-man@...r.kernel.org, musl@...ts.openwall.com, ericonr@...root.org
Subject: [PATCH v2] posix_fallocate.3: add EOPNOTSUPP error code.
As can be seen in
https://git.musl-libc.org/cgit/musl/tree/src/fcntl/posix_fallocate.c?id=73cc775bee53300c7cf759f37580220b18ac13d3
musl libc returns the syscall's errors directly, which means it doesn't
perform the same emulation as glibc, and can return EOPNOTSUPP to an
application, which isnt't listed in ERRORS.
---
This patch replaces "[patch] posix_fallocate.3: add note about error
codes for musl." from
https://lore.kernel.org/linux-man/CAFDeuWPmWWHatxnZ9HsYN2fp3gagHOKCsKmVDj0F6us9XWKwFQ@mail.gmail.com/T/#t
posix_fallocate(3p) doesn't list EOPNOTSUPP as an error that can be
returned to applications. Should it be noted in the man page that this
is something added/required by Linux? (I might be mistaken regarding
this assumption).
man3/posix_fallocate.3 | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/man3/posix_fallocate.3 b/man3/posix_fallocate.3
index 58338d673..125bcc12b 100644
--- a/man3/posix_fallocate.3
+++ b/man3/posix_fallocate.3
@@ -98,6 +98,13 @@ There is not enough space left on the device
containing the file
referred to by
.IR fd .
.TP
+.B EOPNOTSUPP
+The filesystem containing the file referred to by
+.IR fd
+does not support this operation.
+This error code can be returned by libc's that don't perform the
+emulation shown in NOTES, such as musl libc.
+.TP
.B ESPIPE
.I fd
refers to a pipe.
--
2.28.0
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