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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 19:40:15 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 19:40:15 +0000 |
commit | 399644e47874bff147afb19c89228901ac39340e (patch) | |
tree | 1c4c0b733f4c16b5783b41bebb19194a9ef62ad1 /man3/isfdtype.3 | |
parent | Initial commit. (diff) | |
download | manpages-399644e47874bff147afb19c89228901ac39340e.tar.xz manpages-399644e47874bff147afb19c89228901ac39340e.zip |
Adding upstream version 6.05.01.upstream/6.05.01
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | man3/isfdtype.3 | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/man3/isfdtype.3 b/man3/isfdtype.3 new file mode 100644 index 0000000..e8eb1f4 --- /dev/null +++ b/man3/isfdtype.3 @@ -0,0 +1,77 @@ +.\" Copyright (C) 2014 Michael Kerrisk <mtk.manpages@gmail.com> +.\" +.\" SPDX-License-Identifier: Linux-man-pages-copyleft +.\" +.TH isfdtype 3 2023-03-30 "Linux man-pages 6.05.01" +.SH NAME +isfdtype \- test file type of a file descriptor +.SH LIBRARY +Standard C library +.RI ( libc ", " \-lc ) +.SH SYNOPSIS +.nf +.B #include <sys/stat.h> +.B #include <sys/socket.h> +.PP +.BI "int isfdtype(int " fd ", int " fdtype ); +.fi +.PP +.RS -4 +Feature Test Macro Requirements for glibc (see +.BR feature_test_macros (7)): +.RE +.PP +.BR isfdtype (): +.nf + Since glibc 2.20: + _DEFAULT_SOURCE + Before glibc 2.20: + _BSD_SOURCE || _SVID_SOURCE +.fi +.SH DESCRIPTION +The +.BR isfdtype () +function tests whether the file descriptor +.I fd +refers to a file of type +.IR fdtype . +The +.I fdtype +argument specifies one of the +.B S_IF* +constants defined in +.I <sys/stat.h> +and documented in +.BR stat (2) +(e.g., +.BR S_IFREG ). +.SH RETURN VALUE +The +.BR isfdtype () +function returns 1 if the file descriptor +.I fd +is of type +.I fdtype +and 0 if it is not. +On failure, \-1 is returned and +.I errno +is set to indicate the error. +.SH ERRORS +The +.BR isfdtype () +function can fail with any of the same errors as +.BR fstat (2). +.SH VERSIONS +Portable applications should use +.BR fstat (2) +instead. +.SH STANDARDS +None. +.SH HISTORY +It appeared in the draft POSIX.1g standard. +It is present on OpenBSD and Tru64 UNIX +(where the required header file in both cases is just +.IR <sys/stat.h> , +as shown in the POSIX.1g draft). +.SH SEE ALSO +.BR fstat (2) |