1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
.\" @(#)$RCSfile: Cns_chmod.man,v $ $Revision: 1.1.1.1 $ $Date: 2002/10/16 06:25:40 $ CERN IT-PDP/DM Jean-Philippe Baud
.\" Copyright (C) 1999-2002 by CERN/IT/PDP/DM
.\" All rights reserved
.\"
.TH CNS_CHMOD 3 "$Date: 2002/10/16 06:25:40 $" CASTOR "Cns Library Functions"
.SH NAME
Cns_chmod \- change access mode of a CASTOR directory/file in the name server
.SH SYNOPSIS
.B #include <sys/types.h>
.br
\fB#include "Cns_api.h"\fR
.sp
.BI "int Cns_chmod (const char *" path ,
.BI "mode_t " mode )
.SH DESCRIPTION
.B Cns_chmod
sets the access permission portion of the mode of a CASTOR directory/file in
the name server to the bit pattern in
.IR mode.
.TP
.I path
specifies the logical pathname relative to the current CASTOR directory or
the full CASTOR pathname.
.TP
.I mode
is constructed by OR'ing the bits defined in
.RB < sys/stat.h >
under Unix or \fB "statbits.h"\fR under Windows/NT:
.sp
.RS
.B S_ISUID 0004000
set user ID on execution
.br
.B S_ISGID 0002000
set group ID on execution
.br
.B S_ISVTX 0001000
sticky bit
.br
.B S_IRUSR 0000400
read by owner
.br
.B S_IWUSR 0000200
write by owner
.br
.B S_IXUSR 0000100
execute/search by owner
.br
.B S_IRGRP 0000040
read by group
.br
.B S_IWGRP 0000020
write by group
.br
.B S_IXGRP 0000010
execute/search by group
.br
.B S_IROTH 0000004
read by others
.br
.B S_IWOTH 0000002
write by others
.br
.B S_IXOTH 0000001
execute/search by others
.RE
.sp
The effective user ID of the process must match the owner of the file or
the caller must have ADMIN privilege in the Cupv database.
If a directory is writable and has the sticky bit set, files/directories within
that directory can be removed or renamed only if:
.RS
.LP
the effective user ID of the requestor matches the owner ID of the file or
.LP
the effective user ID of the requestor matches the owner ID of the directory or
.LP
the file is writable by the requestor or
.LP
the requestor has ADMIN privilege in the Cupv database.
.RE
.SH RETURN VALUE
This routine returns 0 if the operation was successful or -1 if the operation
failed. In the latter case,
.B serrno
is set appropriately.
.SH ERRORS
.TP 1.3i
.B EPERM
The effective user ID does not match the owner of the file and
the caller does not have ADMIN privilege in the Cupv database.
.TP
.B ENOENT
The named file/directory does not exist or is a null pathname.
.TP
.B EACCES
Search permission is denied on a component of the
.I path
prefix.
.TP
.B EFAULT
.I path
is a NULL pointer.
.TP
.B ENOTDIR
A component of
.I path
prefix is not a directory.
.TP
.B ENAMETOOLONG
The length of
.I path
exceeds
.B CA_MAXPATHLEN
or the length of a
.I path
component exceeds
.BR CA_MAXNAMELEN .
.TP
.B SENOSHOST
Host unknown.
.TP
.B SENOSSERV
Service unknown.
.TP
.B SECOMERR
Communication error.
.TP
.B ENSNACT
Name server is not running or is being shutdown.
.SH SEE ALSO
.BR Castor_limits(4) ,
.BR Cns_chdir(3) ,
.BR Cupvlist(1)
.SH AUTHOR
\fBCASTOR\fP Team <castor.support@cern.ch>
|
