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Annotated edit history of sysfs(2) version 1, including all changes. View license author blame.
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1 perry 1 SYSFS
2 !!!SYSFS
3 NAME
4 SYNOPSIS
5 DESCRIPTION
6 RETURN VALUE
7 ERRORS
8 CONFORMING TO
9 NOTE
10 BUGS
11 ----
12 !!NAME
13
14
15 sysfs - get file system type information
16 !!SYNOPSIS
17
18
19 __int sysfs(int__ ''option''__, const char
20 *__''fsname''__);__
21
22
23 __int sysfs(int__ ''option''__, unsigned int__
24 ''fs_index''__, char
25 *__''buf''__);__
26
27
28 __int sysfs(int__ ''option''__);__
29 !!DESCRIPTION
30
31
32 __sysfs__ returns information about the file system types
33 currently present in the kernel. The specific form of the
34 __sysfs__ call and the information returned depends on
35 the ''option'' in effect:
36
37
38 __1__
39
40
41 Translate the file-system identifier string ''fsname''
42 into a file-system type index.
43
44
45 __2__
46
47
48 Translate the file-system type index ''fs_index'' into a
49 null-terminated file-system identifier string. This string
50 will be written to the buffer pointed to by ''buf''. Make
51 sure that ''buf'' has enough space to accept the
52 string.
53
54
55 __3__
56
57
58 Return the total number of file system types currently
59 present in the kernel.
60
61
62 The numbering of the file-system type indexes begins with
63 zero.
64 !!RETURN VALUE
65
66
67 On success, __sysfs__ returns the file-system index for
68 option __1__, zero for option __2__, and the number of
69 currently configured file systems for option __3__. On
70 error, -1 is returned, and ''errno'' is set
71 appropriately.
72 !!ERRORS
73
74
75 __EINVAL__
76
77
78 ''fsname'' is not a valid file-system type identifier;
79 ''fs_index'' is out-of-bounds; ''option'' is
80 invalid.
81
82
83 __EFAULT__
84
85
86 Either ''fsname'' or ''buf'' is outside your
87 accessible address space.
88 !!CONFORMING TO
89
90
91 SVr4.
92 !!NOTE
93
94
95 On Linux with the ''proc'' filesystem mounted on
96 ''/proc'', the same information can be derived from
97 ''/proc/filesystems''.
98 !!BUGS
99
100
101 There is no libc or glibc support. There is no way to guess
102 how large ''buf'' should be.
103 ----
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