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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