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Diffstat (limited to 'upstream/opensuse-leap-15-6/man2/sysfs.2')
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diff --git a/upstream/opensuse-leap-15-6/man2/sysfs.2 b/upstream/opensuse-leap-15-6/man2/sysfs.2 new file mode 100644 index 00000000..0c8dadb7 --- /dev/null +++ b/upstream/opensuse-leap-15-6/man2/sysfs.2 @@ -0,0 +1,97 @@ +.\" Copyright (C) 1995, Thomas K. Dyas <tdyas@eden.rutgers.edu> +.\" +.\" SPDX-License-Identifier: Linux-man-pages-copyleft +.\" +.\" Created Wed Aug 9 1995 Thomas K. Dyas <tdyas@eden.rutgers.edu> +.\" +.TH sysfs 2 2023-03-30 "Linux man-pages 6.04" +.SH NAME +sysfs \- get filesystem type information +.SH SYNOPSIS +.nf +.BI "[[deprecated]] int sysfs(int " option ", const char *" fsname ); +.BI "[[deprecated]] int sysfs(int " option ", unsigned int " fs_index ", char *" buf ); +.BI "[[deprecated]] int sysfs(int " option ); +.fi +.SH DESCRIPTION +.BR "Note" : +if you are looking for information about the +.B sysfs +filesystem that is normally mounted at +.IR /sys , +see +.BR sysfs (5). +.PP +The (obsolete) +.BR sysfs () +system call returns information about the filesystem types +currently present in the kernel. +The specific form of the +.BR sysfs () +call and the information returned depends on the +.I option +in effect: +.TP 3 +.B 1 +Translate the filesystem identifier string +.I fsname +into a filesystem type index. +.TP +.B 2 +Translate the filesystem type index +.I fs_index +into a null-terminated filesystem identifier string. +This string will +be written to the buffer pointed to by +.IR buf . +Make sure that +.I buf +has enough space to accept the string. +.TP +.B 3 +Return the total number of filesystem types currently present in the +kernel. +.PP +The numbering of the filesystem type indexes begins with zero. +.SH RETURN VALUE +On success, +.BR sysfs () +returns the filesystem index for option +.BR 1 , +zero for option +.BR 2 , +and the number of currently configured filesystems for option +.BR 3 . +On error, \-1 is returned, and +.I errno +is set to indicate the error. +.SH ERRORS +.TP +.B EFAULT +.RI "Either " fsname " or " buf +is outside your accessible address space. +.TP +.B EINVAL +.I fsname +is not a valid filesystem type identifier; +.I fs_index +is out-of-bounds; +.I option +is invalid. +.SH STANDARDS +None. +.SH HISTORY +SVr4. +.PP +This System-V derived system call is obsolete; don't use it. +On systems with +.IR /proc , +the same information can be obtained via +.IR /proc ; +use that interface instead. +.SH BUGS +There is no libc or glibc support. +There is no way to guess how large \fIbuf\fP should be. +.SH SEE ALSO +.BR proc (5), +.BR sysfs (5) |