From: Ben Gras <ben@minix3.org>
Date: Fri, 17 Mar 2006 09:10:39 +0000 (+0000)
Subject: Readlink, symlink manpage; fix for lstat
X-Git-Tag: v3.1.2a~205
X-Git-Url: http://zhaoyanbai.com/repos/COPYRIGHT?a=commitdiff_plain;h=ce64a1d5422fe61bf5f1bff368f5196a7d45637a;p=minix.git

Readlink, symlink manpage; fix for lstat
---

diff --git a/man/man2/readlink.2 b/man/man2/readlink.2
new file mode 100644
index 000000000..018fce205
--- /dev/null
+++ b/man/man2/readlink.2
@@ -0,0 +1,54 @@
+.TH READLINK 2 "March 17, 2006"
+.UC 4
+.SH NAME
+readlink \- read the contents of a symlink
+.SH SYNOPSIS
+.nf
+.ft B
+#include <unistd.h>
+
+int readlink(const char *\fIpath\fP, char *\fIbuf\fP, size_t bufsize)
+.fi
+.ft R
+.SH DESCRIPTION
+The 
+.I readlink
+call reads the contents of the symlink
+.I name1
+and returns it in
+.I buf
+up to a maximum of
+.I bufsize
+bytes. A terminating NUL byte is NOT put in the buffer.
+.SH "RETURN VALUE
+Upon successful completion, a value of 0 is returned.  Otherwise,
+a value of \-1 is returned and
+.B errno
+is set to indicate the error.
+.SH "ERRORS
+.B Readlink
+will fail if one or more of the following are true:
+.TP 15
+[ENOTDIR]
+A component of either path prefix is not a directory.
+.TP 15
+[ENAMETOOLONG]
+A path name exceeds PATH_MAX characters.
+.TP 15
+[ENOENT]
+A component of the path does not exist.
+.TP 15
+[EACCES]
+A component of the path denies search permission.
+.TP 15
+[ELOOP]
+Too many symbolic links were encountered in translating one of the pathnames.
+.TP 15
+[ENOENT]
+The link named by \fIpath\fP does not exist.
+.TP 15
+[EFAULT]
+The buffer specified is outside the process's allocated address space.
+.SH "SEE ALSO"
+.BR symlink (2),
+.BR unlink (2).
diff --git a/man/man2/stat.2 b/man/man2/stat.2
index 36e11dbfd..f33c620ef 100644
--- a/man/man2/stat.2
+++ b/man/man2/stat.2
@@ -16,7 +16,7 @@ stat, lstat, fstat \- get file status
 
 .ta +54n
 int stat(const char *\fIpath\fP, struct stat *\fIbuf\fP)
-int lstat(const char *\fIpath\fP, struct stat *\fIbuf\fP)	(Minix-vmd)
+int lstat(const char *\fIpath\fP, struct stat *\fIbuf\fP)	
 int fstat(int \fIfd\fP, struct stat *\fIbuf\fP)
 .fi
 .ft R
@@ -36,7 +36,6 @@ returns information about the link,
 while
 .B stat
 returns information about the file the link references.
-(Minix-vmd) (Under minix, lstat behaves like stat.)
 .PP
 .B Fstat
 obtains the same information about an open file
@@ -119,7 +118,7 @@ The file type information in \fBst_mode\fP has bits:
 #define\ \ \ \ S_IFDIR	0040000	/* directory */
 #define\ \ \ \ S_IFBLK	0060000	/* block special */
 #define\ \ \ \ S_IFREG	0100000	/* regular */
-#define\ \ \ \ S_IFLNK	0120000	/* symbolic link (Minix-vmd) */
+#define\ \ \ \ S_IFLNK	0120000	/* symbolic link */
 .fi
 .in -5n
 .PP
@@ -151,7 +150,6 @@ Search permission is denied for a component of the path prefix.
 .TP 15
 [ELOOP]
 Too many symbolic links were encountered in translating the pathname.
-(Minix-vmd)
 .TP 15
 [EFAULT]
 .I Buf
diff --git a/man/man2/symlink.2 b/man/man2/symlink.2
new file mode 100644
index 000000000..9215d7b08
--- /dev/null
+++ b/man/man2/symlink.2
@@ -0,0 +1,77 @@
+.TH SYMLINK 2 "March 17, 2006"
+.UC 4
+.SH NAME
+symlink \- make a symbolic link to a file
+.SH SYNOPSIS
+.nf
+.ft B
+#include <unistd.h>
+
+int symlink(const char *\fIname1\fP, const char *\fIname2\fP)
+.fi
+.ft R
+.SH DESCRIPTION
+A symbolic link
+.I name2
+is created.
+The link has the name
+.IR name1 .
+.SH "RETURN VALUE
+Upon successful completion, a value of 0 is returned.  Otherwise,
+a value of \-1 is returned and
+.B errno
+is set to indicate the error.
+.SH "ERRORS
+.B Symlink
+will fail and no link will be created if one or more of the following
+are true:
+.TP 15
+[ENOTDIR]
+A component of either path prefix is not a directory.
+.TP 15
+[ENAMETOOLONG]
+A path name exceeds PATH_MAX characters.
+.TP 15
+[ENOENT]
+A component of either path prefix does not exist.
+.TP 15
+[EACCES]
+A component of either path prefix denies search permission.
+.TP 15
+[EACCES]
+The requested link requires writing in a directory with a mode
+that denies write permission.
+.TP 15
+[ELOOP]
+Too many symbolic links were encountered in translating one of the pathnames.
+.TP 15
+[EEXIST]
+The link named by \fIname2\fP exists.
+.TP 15
+[ENOSPC]
+The directory in which the entry for the new link is being placed
+cannot be extended because there is no space left on the file
+system containing the directory.
+.ig
+.TP 15
+[EDQUOT]
+The directory in which the entry for the new link
+is being placed cannot be extended because the
+user's quota of disk blocks on the file system
+containing the directory has been exhausted.
+..
+.TP 15
+[EIO]
+An I/O error occurred while reading from or writing to 
+the file system to make the directory entry.
+.TP 15
+[EROFS]
+The requested link requires writing in a directory on a read-only file
+system.
+.TP 15
+[EFAULT]
+One of the pathnames specified
+is outside the process's allocated address space.
+.SH "SEE ALSO"
+.BR link (2),
+.BR unlink (2).