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1 perry 1 USTAT
2 !!!USTAT
3 NAME
4 SYNOPSIS
5 DESCRIPTION
6 RETURN VALUE
7 ERRORS
8 NOTES
9 CONFORMING TO
10 SEE ALSO
11 ----
12 !!NAME
13
14
15 ustat - get file system statistics
16 !!SYNOPSIS
17
18
19 __#include
20 __ /* libc[[45] */
21 __#include __ /* glibc2 */
22 __int ustat(dev_t__ ''dev''__, struct ustat *__ ''ubuf''__);
23 __
24 !!DESCRIPTION
25
26
27 __ustat__ returns information about a mounted file
28 system. ''dev'' is a device number identifying a device
29 containing a mounted file system. ''ubuf'' is a pointer
30 to a ustat structure that contains the following
31 members:
32
33
34 daddr_t f_tfree; /* Total free blocks */
35 ino_t f_tinode; /* Number of free inodes */
36 char f_fname[[6]; /* Filsys name */
37 char f_fpack[[6]; /* Filsys pack name */
38
39
40 The last two fields, f_fname and f_fpack, are not
41 implemented and will always be filled with null
42 characters.
43 !!RETURN VALUE
44
45
46 On success, zero is returned and the ustat structure pointed
47 to by ''ubuf'' will be filled in. On error, -1 is
48 returned, and ''errno'' is set
49 appropriately.
50 !!ERRORS
51
52
53 __EINVAL__
54
55
56 ''dev'' does not refer to a device containing a mounted
57 file system.
58
59
60 __EFAULT__
61
62
63 ''ubuf'' points outside of your accessible address
64 space.
65
66
67 __ENOSYS__
68
69
70 The mounted file system referenced by ''dev'' does not
71 support this operation, or any version of Linux before
72 1.3.16.
73 !!NOTES
74
75
76 __ustat__ has only been provided for compatibility. All
77 new programs should use statfs(2)
78 instead.
79 !!CONFORMING TO
80
81
82 SVr4. SVr4 documents additional error conditions ENOLINK,
83 ECOMM, and EINTR but has no ENOSYS condition.
84 !!SEE ALSO
85
86
87 statfs(2), stat(2)
88 ----
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