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| author | Tobias Klauser <tklauser@distanz.ch> | 2008-01-27 11:37:44 +0100 |
|---|---|---|
| committer | Tobias Klauser <tklauser@xenon.tklauser.home> | 2008-01-27 11:37:44 +0100 |
| commit | 7e0f021a9aec35fd8e6725e87e3313b101d26f5e (patch) | |
| tree | b1cacc4b24393f517aeb4610e9e1021f954307a8 /reference/C/MAN/access.htm | |
Initial import (2.0.2-6)2.0.2-6
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| -rw-r--r-- | reference/C/MAN/access.htm | 166 |
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diff --git a/reference/C/MAN/access.htm b/reference/C/MAN/access.htm new file mode 100644 index 0000000..71154b7 --- /dev/null +++ b/reference/C/MAN/access.htm @@ -0,0 +1,166 @@ +<TITLE>access</TITLE> +<body bgcolor="#ffffcc"> +<hr> +<pre> + + + +<h3>ACCESS(2) Linux Programmer's Manual ACCESS(2) +</h3> + +<h3>NAME +</h3> access - check user's permissions for a file + +<h3>SYNOPSIS +</h3> #include <unistd.h> + + int access(const char *pathname, int mode); + +<h3>DESCRIPTION +</h3> access checks whether the process would be allowed to + read, write or test for existence of the file (or other + file system object) whose name is pathname. + + mode is a mask consisting of one or more of R_OK, W_OK, + X_OK and F_OK. + + R_OK, W_OK and X_OK request testing for reading, writing + and executing the file, respectively. F_OK requests + checking whether merely testing for the existence of the + file would be allowed (this depends on the permissions of + the directories in the path to the file, as given in path- + name.) + + The check is done with the process's real uid and gid, + rather than with the effective ids as is done when actu- + ally attempting an operation. This is to allow set-UID + programs to easily determine the invoking user's author- + ity. + + Only access bits are checked, not the file type or con- + tents. Therefore, if a directory is found to be + "writable," it probably means that files can be created in + the directory, and not that the directory can be written + as a file. Similarly, a DOS file may be found to be "exe- + cutable," but the execve(2) call will still fail. + +<h3>RETURN VALUE +</h3> On success, zero is returned. On error, -1 is returned, + and errno is set appropriately. + +<h3>ERRORS +</h3> EACCES The requested access would be denied, either to + the file itself or one of the directories in path- + name. + + EFAULT pathname points outside your accessible address + space. + + EINVAL mode was incorrectly specified. + + ENAMETOOLONG + pathname is too long. + + ENOENT A directory component in pathname would have been + + + +<h3>Linux 1.1.46 21 August 1994 1 +</h3> + + + + +<h3>ACCESS(2) Linux Programmer's Manual ACCESS(2) +</h3> + + accessible but does not exist or was a dangling + symbolic link. + + ENOTDIR A component used as a directory in pathname is + not, in fact, a directory. + + ENOMEM Insufficient kernel memory was available. + + ELOOP pathname contains a reference to a circular sym- + bolic link, i.e., a symbolic link containing a + reference to itself. + +<h3>CONFORMING TO +</h3> SVID, AT&T, POSIX, X/OPEN, BSD 4.3 + +</pre> +<hr> +<h3>SEE ALSO +</h3><p> +<a href=stat.htm>stat</a>, +<a href=open.htm>open</a>, +<a href=chmod.htm>chmod</a>, +<a href=chown.htm>chown</a>, +<a href=setuid.htm>setuid</a>, +<pre> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +<h3>Linux 1.1.46 21 August 1994 2 +</h3> + +
</pre> +<P> +<hr> +<p> +<center> +<table border=2 width=80%> +<tr align=center> +<td width=25%> +<a href=../cref.html>Top</a> +</td><td width=25%> +<a href=../master_index.html>Master Index</a> +</td><td width=25%> +<a href=../SYNTAX/keywords.html>Keywords</a> +</td><td width=25%> +<a href=../FUNCTIONS/funcref.htm>Functions</a> +</td> +</tr> +</table> +</center> +<p> +<hr> + +This manual page was brought to you by <i>mjl_man V-2.0</i> |