home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Aminet 15
/
Aminet 15 - Nov 1996.iso
/
Aminet
/
dev
/
gcc
/
ixemsdk.lha
/
man
/
cat2
/
chown.0
< prev
next >
Wrap
Text File
|
1996-09-01
|
3KB
|
93 lines
CHOWN(2) UNIX Programmer's Manual CHOWN(2)
NNAAMMEE
cchhoowwnn, ffcchhoowwnn - change owner and group of a file
SSYYNNOOPPSSIISS
##iinncclluuddee <<ssyyss//ttyyppeess..hh>>
##iinncclluuddee <<uunniissttdd..hh>>
_i_n_t
cchhoowwnn(_c_o_n_s_t _c_h_a_r _*_p_a_t_h, _u_i_d___t _o_w_n_e_r, _g_i_d___t _g_r_o_u_p)
_i_n_t
ffcchhoowwnn(_i_n_t _f_d, _u_i_d___t _o_w_n_e_r, _u_i_d___t _g_r_o_u_p)
DDEESSCCRRIIPPTTIIOONN
The owner ID and group ID of the file named by _p_a_t_h or referenced by _f_d
is changed as specified by the arguments _o_w_n_e_r and _g_r_o_u_p. The owner of a
file may change the _g_r_o_u_p to a group of which he or she is a member, but
the change _o_w_n_e_r capability is restricted to the super-user.
CChhoowwnn() clears the set-user-id and set-group-id bits on the file to pre-
vent accidental or mischievous creation of set-user-id and set-group-id
programs.
FFcchhoowwnn() is particularly useful when used in conjunction with the file
locking primitives (see flock(2)).
One of the owner or group id's may be left unchanged by specifying it as
-1.
RREETTUURRNN VVAALLUUEESS
Zero is returned if the operation was successful; -1 is returned if an
error occurs, with a more specific error code being placed in the global
variable _e_r_r_n_o.
EERRRROORRSS
CChhoowwnn() will fail and the file will be unchanged if:
[ENOTDIR] A component of the path prefix is not a directory.
[ENAMETOOLONG]
A component of a pathname exceeded {NAME_MAX} characters,
or an entire path name exceeded {PATH_MAX} characters.
[ENOENT] The named file does not exist.
[EACCES] Search permission is denied for a component of the path
prefix.
[ELOOP] Too many symbolic links were encountered in translating the
pathname.
[EPERM] The effective user ID is not the super-user.
[EROFS] The named file resides on a read-only file system.
[EFAULT] _P_a_t_h points outside the process's allocated address space.
[EIO] An I/O error occurred while reading from or writing to the
file system.
FFcchhoowwnn() will fail if:
[EBADF] _F_d does not refer to a valid descriptor.
[EINVAL] _F_d refers to a socket, not a file.
[EPERM] The effective user ID is not the super-user.
[EROFS] The named file resides on a read-only file system.
[EIO] An I/O error occurred while reading from or writing to the
file system.
SSEEEE AALLSSOO
chown(8), chgrp(1), chmod(2), flock(2)
SSTTAANNDDAARRDDSS
The cchhoowwnn() function is expected to conform to IEEE Std1003.1-1988
(``POSIX'').
HHIISSTTOORRYY
The ffcchhoowwnn() function call appeared in 4.2BSD.
The cchhoowwnn() and ffcchhoowwnn() functions were changed to follow symbolic links
in 4.4BSD.
4th Berkeley Distribution April 19, 1994 2