10 files changed, 0 insertions, 891 deletions
diff --git a/man/man3/abort.3 b/man/man3/abort.3
deleted file mode 100644
index 2615f5b5..00000000
--- a/man/man3/abort.3
+++ /dev/null
@@ -1,18 +0,0 @@
-.TH ABORT 3
-.SH NAME
-abort \- generate a fault
-.SH SYNOPSIS
-.B #include <u.h>
-.br
-.B #include <libc.h>
-.PP
-.nf
-.B
-void	abort(void)
-.fi
-.SH DESCRIPTION
-.I Abort
-causes an access fault, causing the current process to enter the `Broken' state.
-The process can then be inspected by a debugger.
-.SH SOURCE
-.B /usr/local/plan9/src/libc/9sys/abort.c
diff --git a/man/man3/access.3 b/man/man3/access.3
deleted file mode 100644
index d98d88a5..00000000
--- a/man/man3/access.3
+++ /dev/null
@@ -1,60 +0,0 @@
-.TH ACCESS 3
-.SH NAME
-access \- determine accessibility of file
-.SH SYNOPSIS
-.B #include <u.h>
-.br
-.B #include <libc.h>
-.PP
-.B
-int access(char *name, int mode)
-.SH DESCRIPTION
-.I Access
-evaluates the given
-file
-.I name
-for accessibility.
-If \fImode\fL&4\fR
-is nonzero,
-read permission is expected;
-if \fImode\fL&2\fR,
-write permission;
-if \fImode\fL&1\fR,
-execute permission.
-If \fImode\fL==0\fR,
-the file merely need exist.
-In any case
-all directories leading to the file
-must permit searches.
-Zero is returned if the desired access is permitted,
-\-1 if not.
-.PP
-Only access for open is checked.
-A file may look executable, but
-.IR exec (3)
-will fail unless it is in proper format.
-.PP
-The include file
-.F <libc.h>
-defines
-.BR AEXIST =0,
-.BR AEXEC =1,
-.BR AWRITE =2,
-and
-.BR AREAD =4.
-.PP
-.SH SOURCE
-.B /usr/local/plan9/src/libc/9sys/access.c
-.SH SEE ALSO
-.IR stat (3)
-.SH DIAGNOSTICS
-Sets
-.IR errstr .
-.SH BUGS
-Since file permissions are checked by the server and group information
-is not known to the client,
-.I access
-must open the file to check permissions.
-(It calls
-.IR stat (3)
-to check simple existence.)
diff --git a/man/man3/assert.3 b/man/man3/assert.3
deleted file mode 100644
index 82c43d08..00000000
--- a/man/man3/assert.3
+++ /dev/null
@@ -1,25 +0,0 @@
-.TH ASSERT 3
-.SH NAME
-assert \- check program invariants
-.SH SYNOPSIS
-.B #include <u.h>
-.br
-.B #include <libc.h>
-.PP
-.B
-#define assert if(cond);else _assert("cond")
-.PP
-.B
-void _assert(int cond)
-.SH DESCRIPTION
-.I Assert
-is a preprocessor macro that
-(via
-.IR _assert )
-prints a message and calls
-.I abort
-when
-.I cond
-is false.
-.SH SOURCE
-.B /usr/local/plan9/src/libc/port/_assert.c
diff --git a/man/man3/ctype.3 b/man/man3/ctype.3
deleted file mode 100644
index bb3f3327..00000000
--- a/man/man3/ctype.3
+++ /dev/null
@@ -1,160 +0,0 @@
-.TH CTYPE 3
-.SH NAME
-isalpha, isupper, islower, isdigit, isxdigit, isalnum, isspace, ispunct, isprint, isgraph, iscntrl, isascii, toascii, _toupper, _tolower, toupper, tolower \- ASCII character classification
-.SH SYNOPSIS
-.B #include <u.h>
-.br
-.B #include <libc.h>
-.br
-.B #include <ctype.h>
-.PP
-.if t .2C
-.B isalpha(c)
-.PP
-.B isupper(c)
-.PP
-.B islower(c)
-.PP
-.B isdigit(c)
-.PP
-.B isxdigit(c)
-.PP
-.B isalnum(c)
-.PP
-.B isspace(c)
-.PP
-.B ispunct(c)
-.PP
-.B isprint(c)
-.PP
-.B isgraph(c)
-.PP
-.B iscntrl(c)
-.PP
-.B isascii(c)
-.PP
-.B _toupper(c)
-.PP
-.B _tolower(c)
-.PP
-.B toupper(c)
-.PP
-.B tolower(c)
-.PP
-.B toascii(c)
-.if t .1C
-.SH DESCRIPTION
-These macros classify
-.SM ASCII\c
--coded integer values
-by table lookup.
-Each is a predicate returning nonzero for true,
-zero for false.
-.I Isascii
-is defined on all integer values; the rest
-are defined only where
-.I isascii
-is true and on the single non-\c
-.SM ASCII
-value
-.BR EOF ;
-see
-.IR fopen (3).
-.TP "\w'isalnum  'u"
-.I isalpha
-.I c
-is a letter, a\-z or A\-Z
-.TP
-.I isupper
-.I c
-is an upper case letter, A\-Z
-.TP
-.I islower
-.I c
-is a lower case letter, a\-z
-.TP
-.I isdigit
-.I c
-is a digit, 0\-9
-.TP
-.I isxdigit
-.I c
-is a hexadecimal digit, 0\-9 or a\-f or A\-F
-.TP
-.I isalnum
-.I c
-is an alphanumeric character, a\-z or A\-Z or 0\-9
-.TP
-.I isspace
-.I c
-is a space, horizontal tab, newline, vertical tab, formfeed, or carriage return
-(0x20, 0x9, 0xA, 0xB, 0xC, 0xD)
-.TP
-.I ispunct
-.I c
-is a punctuation character
-(one of
-.L
-!"#$%&'()*+,-./:;<=>?@[\e]^_`{|}~\fR)
-.TP
-.I isprint
-.I c
-is a printing character, 0x20 (space)
-through 0x7E (tilde) 
-.TP
-.I isgraph
-.I c
-is a visible printing character, 0x21 (exclamation) through 0x7E
-(tilde)
-.TP
-.I iscntrl
-.I c
-is a delete character, 0x7F,
-or ordinary control character, 0x0 through 0x1F
-.TP
-.I isascii
-.I c
-is an
-.SM ASCII
-character, 0x0 through 0x7F
-.PP
-.I Toascii
-is not a classification macro;
-it converts its argument to
-.SM ASCII
-range by
-.IR and ing
-with 0x7F.
-.PP
-If
-.I c
-is an upper case letter,
-.I tolower
-returns the lower case version of the character;
-otherwise it returns the original character.
-.I Toupper
-is similar, returning the upper case version of a character
-or the original character.
-.I Tolower
-and
-.I toupper
-are functions;
-.I _tolower
-and
-.I _toupper
-are corresponding macros which should only be used when it
-is known that the argument is upper case or lower case, respectively.
-.SH SOURCE
-.TF /usr/local/plan9/src/libc/port/ctype.c
-.TP
-.B /sys/include/ctype.h
-for the macros.
-.TP
-.B /usr/local/plan9/src/libc/port/ctype.c
-for the tables.
-.SH "SEE ALSO
-.IR isalpharune (3)
-.SH BUGS
-These macros are
-.SM ASCII \c
--centric.
diff --git a/man/man3/getfcr.3 b/man/man3/getfcr.3
deleted file mode 100644
index 577180a7..00000000
--- a/man/man3/getfcr.3
+++ /dev/null
@@ -1,125 +0,0 @@
-.TH GETFCR 3
-.SH NAME
-getfcr, setfcr, getfsr, setfsr \- control floating point
-.SH SYNOPSIS
-.B #include <u.h>
-.br
-.B #include <libc.h>
-.PP
-.B
-ulong getfcr(void)
-.PP
-.B
-void setfcr(ulong fcr)
-.PP
-.B
-ulong getfsr(void)
-.PP
-.B
-void setfsr(ulong fsr)
-.SH DESCRIPTION
-These routines provide a fairly portable interface to control the
-rounding and exception characteristics of IEEE 754 floating point units.
-In effect, they define a pair of pseudo-registers, the floating
-point control register,
-.BR fcr ,
-which affects rounding, precision, and exceptions, and the
-floating point status register,
-.BR fsr ,
-which holds the accrued exception bits.
-Each register has a
-.I get
-routine to retrieve its value, a
-.I set
-routine to modify it,
-and macros that identify its contents.
-.PP
-The
-.B fcr
-contains bits that, when set, halt execution upon exceptions:
-.B FPINEX
-(enable inexact exceptions),
-.B FPOVFL
-(enable overflow exceptions),
-.B FPUNFL
-(enable underflow exceptions),
-.B FPZDIV
-(enable zero divide exceptions), and
-.B FPINVAL
-(enable invalid operation exceptions).
-Rounding is controlled by installing in
-.BR fcr ,
-under mask
-.BR FPRMASK ,
-one of the values
-.B FPRNR
-(round to nearest),
-.B FPRZ
-(round towards zero),
-.B FPRPINF
-(round towards positive infinity), and
-.B FPRNINF
-(round towards negative infinity).
-Precision is controlled by installing in
-.BR fcr ,
-under mask
-.BR FPPMASK ,
-one of the values
-.B FPPEXT
-(extended precision),
-.B FPPSGL
-(single precision), and
-.B FPPDBL
-(double precision).
-.PP
-The
-.B fsr
-holds the accrued exception bits
-.BR FPAINEX ,
-.BR FPAOVFL ,
-.BR FPAUNFL ,
-.BR FPAZDIV ,
-and
-.BR FPAINVAL ,
-corresponding to the
-.B fsr
-bits without the
-.B A
-in the name.
-.PP
-Not all machines support all modes.  If the corresponding mask
-is zero, the machine does not support the rounding or precision modes.
-On some machines it is not possible to clear selective accrued
-exception bits; a
-.I setfsr
-clears them all.
-The exception bits defined here work on all architectures.
-By default, the initial state is equivalent to
-.IP
-.EX
-setfcr(FPPDBL|FPRNR|FPINVAL|FPZDIV|FPOVFL);
-.EE
-.PP
-The default state of the floating point unit is fixed for a given
-architecture but is undefined across Plan 9: the default is
-to provide what the hardware does most efficiently.
-Use these routines
-if you need guaranteed behavior.
-Also, gradual underflow is not available on some machines.
-.SH EXAMPLE
-To enable overflow traps and make sure registers are rounded
-to double precision (for example on the MC68020, where the
-internal registers are 80 bits long):
-.EX
-.IP
-.ft L
-ulong fcr;
-fcr = getfcr();
-fcr |= FPOVFL;
-fcr &= ~FPPMASK;
-fcr |= FPPDBL;
-setfcr(fcr);
-.ft
-.EE
-.SH SOURCE
-.B /usr/local/plan9/src/libc/$objtype/getfcr.s
diff --git a/man/man3/hypot.3 b/man/man3/hypot.3
deleted file mode 100644
index a539c72e..00000000
--- a/man/man3/hypot.3
+++ /dev/null
@@ -1,21 +0,0 @@
-.TH HYPOT 3
-.SH NAME
-hypot \- Euclidean distance
-.SH SYNOPSIS
-.B #include <u.h>
-.br
-.B #include <libc.h>
-.PP
-.nf
-.B
-double hypot(double x, double y)
-.fi
-.SH DESCRIPTION
-.I Hypot
-returns
-.EX
-	sqrt(x*x + y*y)
-.EE
-taking precautions against unwarranted overflows.
-.SH SOURCE
-.B /usr/local/plan9/src/libc/port/hypot.c
diff --git a/man/man3/mktemp.3 b/man/man3/mktemp.3
deleted file mode 100644
index 9ab13cba..00000000
--- a/man/man3/mktemp.3
+++ /dev/null
@@ -1,40 +0,0 @@
-.TH MKTEMP 3
-.SH NAME
-mktemp \- make a unique file name
-.SH SYNOPSIS
-.B #include <u.h>
-.br
-.B #include <libc.h>
-.PP
-.nf
-.B
-char* mktemp(char *template)
-.fi
-.SH DESCRIPTION
-.I Mktemp
-replaces
-.I template
-by a unique file name, and returns the
-address of the template.
-The template should look like a file name with eleven trailing
-.LR X s.
-The
-.LR X s
-are replaced by a letter followed by the current process id.
-Letters from
-.L a
-to
-.L z
-are tried until a name that can be accessed
-(see
-.IR access (3))
-is generated.
-If no such name can be generated,
-.I mktemp
-returns
-\f5"/"\f1 .
-.SH SOURCE
-.B /usr/local/plan9/src/libc/port/mktemp.c
-.SH "SEE ALSO"
-.IR getpid (3),
-.IR access (3)
diff --git a/man/man3/pool.3 b/man/man3/pool.3
deleted file mode 100644
index 12be5792..00000000
--- a/man/man3/pool.3
+++ /dev/null
@@ -1,329 +0,0 @@
-.TH POOL 3
-.SH NAME
-poolalloc, poolfree, poolmsize, poolrealloc, poolcompact, poolcheck, poolblockcheck,
-pooldump \- general memory management routines
-.SH SYNOPSIS
-.B #include <u.h>
-.PP
-.B #include <libc.h>
-.PP
-.B #include <pool.h>
-.PP
-.B
-void*	poolalloc(Pool* pool, ulong size)
-.PP
-.B
-void	poolfree(Pool* pool, void* ptr)
-.PP
-.B
-ulong	poolmsize(Pool* pool, void* ptr)
-.PP
-.B
-void*	poolrealloc(Pool* pool, void* ptr, ulong size)
-.PP
-.B
-void	poolcompact(Pool* pool)
-.PP
-.B
-void	poolcheck(Pool *pool)
-.PP
-.B
-void	poolblockcheck(Pool *pool, void *ptr)
-.PP
-.B
-void pooldump(Pool *pool);
-.SH DESCRIPTION
-These routines provide a general memory management facility.
-Memory is retrieved from a coarser allocator (e.g. 
-.I sbrk
-or the kernel's 
-.IR xalloc )
-and then allocated to callers.
-The routines are locked and thus may safely be used in
-multiprocess programs.
-.PP
-.I Poolalloc
-attempts to allocate a block of size
-.BR size ;
-it returns a pointer to the block when successful and nil otherwise.
-The call
-.B "poolalloc(0)
-returns a non-nil pointer.
-.I Poolfree
-returns an allocated block to the pool.
-It is an error to free a block more than once or to free a
-pointer not returned by
-.IR poolalloc .
-The call
-.B "poolfree(nil)
-is legal and is a no-op.
-.I Poolrealloc
-attempts to resize to
-.B nsize
-bytes the block associated with
-.BR ptr ,
-which must have been previously returned by
-.I poolalloc
-or 
-.IR poolrealloc .
-If the block's size can be adjusted, a (possibly different) pointer to the new block is returned.
-The contents up to the lesser of the old and new sizes are unchanged.
-After a successful call to
-.IR poolrealloc ,
-the return value should be used rather than
-.B ptr
-to access the block.
-If the request cannot be satisfied, 
-.I poolrealloc
-returns nil, and the old pointer remains valid.
-.PP
-When blocks are allocated, there is often some extra space left at the end
-that would usually go unused.
-.IR Poolmsize
-grows the block to encompass this extra space and returns the new size.
-.PP
-The 
-.I poolblockcheck
-and
-.I poolcheck
-routines validate a single allocated block or the entire pool, respectively.
-They call 
-.B panic
-(see below)
-if corruption is detected.
-.I Pooldump
-prints a summary line for every block in the
-pool, using the
-.B print
-function (see below).
-.PP
-The
-.B Pool
-structure itself provides much of the setup interface.
-.IP
-.EX
-.ta \w'\fL    'u +\w'\fLulong 'u +\w'\fLlastcompact;  'u
-typedef struct Pool Pool;
-struct Pool {
-	char*	name;
-	ulong	maxsize;	/* of entire Pool */
-	ulong	cursize;	/* of Pool */
-	ulong	curfree;	/* total free bytes in Pool */
-	ulong	curalloc;	/* total allocated bytes in Pool */
-	ulong	minarena;	/* smallest size of new arena */
-	ulong	quantum;	/* allocated blocks should be multiple of */
-	ulong	minblock;	/* smallest newly allocated block */
-	int	flags;
-	int	nfree;	/* number of calls to free */
-	int	lastcompact;	/* nfree at time of last poolcompact */
-	void*	(*alloc)(ulong);
-	int	(*merge)(void*, void*);
-	void	(*move)(void* from, void* to);
-	void	(*lock)(Pool*);
-	void	(*unlock)(Pool*);
-	void	(*print)(Pool*, char*, ...);
-	void	(*panic)(Pool*, char*, ...);
-	void	(*logstack)(Pool*);
-	void*	private;
-};
-.ta \w'\fL    'u +\w'POOL_ANTAGONISM 'u
-enum {  /* flags */
-	POOL_ANTAGONISM	= 1<<0,
-	POOL_PARANOIA	= 1<<1,
-	POOL_VERBOSITY	= 1<<2,
-	POOL_DEBUGGING	= 1<<3,
-	POOL_LOGGING	= 1<<4,
-	POOL_TOLERANCE	= 1<<5,
-	POOL_NOREUSE	= 1<<6,
-};
-.EE
-.PP
-The pool obtains arenas of memory to manage by calling the the given
-.B alloc
-routine.
-The total number of requested bytes will not exceed 
-.BR maxsize .
-Each allocation request will be for at least
-.B minarena
-bytes.
-.PP
-When a new arena is allocated, the pool routines try to
-merge it with the surrounding arenas, in an attempt to combat fragmentation.
-If 
-.B merge
-is non-nil, it is called with the addresses of two blocks from
-.B alloc
-that the pool routines suspect might be adjacent.
-If they are not mergeable, 
-.B merge
-must return zero.
-If they are mergeable, 
-.B merge
-should merge them into one block in its own bookkeeping
-and return non-zero.
-.PP
-To ease fragmentation and make 
-block reuse easier, the sizes requested of the pool routines are rounded up to a multiple of
-.B quantum
-before 
-the carrying out requests.
-If, after rounding, the block size is still less than
-.B minblock
-bytes, 
-.B minblock
-will be used as the block size.
-.PP
-.I Poolcompact
-defragments the pool, moving blocks in order to aggregate
-the free space.
-Each time it moves a block, it notifies the
-.B move
-routine that the contents have moved.
-At the time that
-.B move
-is called, the contents have already moved,
-so 
-.B from
-should never be dereferenced.
-If no
-.B move
-routine is supplied (i.e. it is nil), then calling
-.I poolcompact
-is a no-op.
-.PP
-When the pool routines need to allocate a new arena but cannot,
-either because
-.B alloc
-has returned nil or because doing so would use more than
-.B maxsize
-bytes,
-.I poolcompact
-is called once to defragment the memory
-and the request is retried.
-.PP
-.I Pools
-are protected by the pool routines calling
-.B lock
-(when non-nil)
-before modifying the pool, and
-calling
-.B unlock
-when finished.
-.PP
-When internal corruption is detected,
-.B panic
-is called with a 
-.IR print (3)
-style argument that specifies what happened.
-It is assumed that 
-.B panic
-never returns.
-When the pool routines wish to convey a message
-to the caller (usually because logging is turned on; see below),
-.B print
-is called, also with a 
-.IR print (3)
-style argument.
-.PP
-.B Flags
-is a bit vector that tweaks the behavior of the pool routines
-in various ways.
-Most are useful for debugging in one way or another.
-When
-.B POOL_ANTAGONISM
-is set,
-.I poolalloc
-fills blocks with non-zero garbage before releasing them to the user,
-and
-.I poolfree
-fills the blocks on receipt.
-This tickles both user programs and the innards of the allocator.
-Specifically, each 32-bit word of the memory is marked with a pointer value exclusive-or'ed
-with a constant.
-The pointer value is the pointer to the beginning of the allocated block
-and the constant varies in order to distinguish different markings.
-Freed blocks use the constant 
-.BR 0xF7000000 ,
-newly allocated blocks
-.BR 0xF9000000 ,
-and newly created unallocated blocks
-.BR 0xF1000000 .
-For example, if 
-.B POOL_ANTAGONISM 
-is set and
-.I poolalloc
-returns a block starting at 
-.BR 0x00012345 ,
-each word of the block will contain the value
-.BR 0xF90012345 .
-Recognizing these numbers in memory-related crashes can
-help diagnose things like double-frees or dangling pointers.
-.PP
-Setting
-.B POOL_PARANOIA
-causes the allocator to walk the entire pool whenever locking or unlocking itself,
-looking for corruption.
-This slows runtime by a few orders of magnitude
-when many blocks are in use.
-If 
-.B POOL_VERBOSITY
-is set, 
-the entire pool structure is printed
-(via 
-.BR print )
-each time the pool is locked or unlocked.
-.B POOL_DEBUGGING
-enables internal
-debugging output,
-whose format is unspecified and volatile.
-It should not be used by most programs.
-When
-.B POOL_LOGGING
-is set, a single line is printed via 
-.B print
-at the beginning and end of each pool call.
-If 
-.B logstack
-is not nil, 
-it will be called as well.
-This provides a mechanism for external programs to search for leaks.
-(See 
-.IR leak (1)
-for one such program.)
-.PP
-The pool routines are strict about the amount of space callers use.
-If even a single byte is written past the end of the allotted space of a block, they
-will notice when that block is next used in a call to
-.I poolrealloc
-or 
-.I free
-(or at the next entry into the allocator, when
-.B POOL_PARANOIA
-is set),
-and
-.B panic
-will be called.
-Since forgetting to allocate space for the
-terminating NUL on strings is such a common error,
-if
-.B POOL_TOLERANCE 
-is set and a single NUL is found written past the end of a block,
-.B print
-will be called with a notification, but
-.B panic
-will not be.
-.PP
-When
-.B POOL_NOREUSE
-is set,
-.B poolfree
-fills the passed block with garbage rather than
-return it to the free pool.
-.SH SOURCE
-.B /usr/local/plan9/src/libc/port/pool.c
-.SH SEE ALSO
-.IR malloc (3),
-.IR brk (3)
-.PP
-.B /usr/local/plan9/src/libc/port/malloc.c
-is a complete example.
diff --git a/man/man3/readv.3 b/man/man3/readv.3
deleted file mode 100644
index d74957e3..00000000
--- a/man/man3/readv.3
+++ /dev/null
@@ -1,82 +0,0 @@
-.TH READV 3
-.SH NAME
-readv, writev, preadv, pwritev \- scatter/gather read and write
-.SH SYNOPSIS
-.B #include <u.h>
-.br
-.B #include <libc.h>
-.PP
-.nf
-.ft L
-typedef
-struct IOchunk
-{
-	void		*addr;
-	ulong	len;
-} IOchunk;
-.fi
-.PP
-.B
-long readv(int fd, IOchunk *io, int nio)
-.PP
-.B
-long preadv(int fd, IOchunk *io, int nio, vlong off)
-.PP
-.B
-long writev(int fd, IOchunk *io, int nio)
-.PP
-.B
-long pwritev(int fd, IOchunk *io, int nio, vlong off)
-.SH DESCRIPTION
-These functions supplement the standard read and write operations of
-.IR read (3)
-with facilities for scatter/gather I/O.
-The set of I/O buffers is collected into an array of
-.B IOchunk
-structures passed as an argument.
-.PP
-.I Readv
-reads data from
-.I fd
-and returns the total number of bytes received.
-The received data is stored in the successive
-.I nio
-elements of the
-.B IOchunk
-array, storing
-.IB io [0].len
-bytes at
-.IB io [0].addr\f1,
-the next
-.IB io [1].len
-at
-.IB io [1].addr\f1,
-and so on.
-.I Preadv
-does the same, but implicitly seeks to I/O offset
-.I off
-by analogy with
-.IR readv .
-.PP
-.I Writev
-and
-.I pwritev
-are the analogous write routines.
-.SH SOURCE
-.B /usr/local/plan9/src/libc/9sys/readv.c
-.br
-.B /usr/local/plan9/src/libc/9sys/writev.c
-.SH SEE ALSO
-.IR intro (3),
-.IR read (3)
-.SH DIAGNOSTICS
-These functions set
-.IR errstr .
-.SH BUGS
-The implementations use
-.IR malloc (3)
-to build a single buffer for a standard call to
-.B read
-or
-.BR write .
-They are placeholders for possible future system calls.
diff --git a/man/man3/remove.3 b/man/man3/remove.3
deleted file mode 100644
index ff195b93..00000000
--- a/man/man3/remove.3
+++ /dev/null
@@ -1,31 +0,0 @@
-.TH REMOVE 3
-.SH NAME
-remove \- remove a file
-.SH SYNOPSIS
-.B #include <u.h>
-.br
-.B #include <libc.h>
-.PP
-.B
-int remove(char *file)
-.SH DESCRIPTION
-.I Remove
-removes
-.I file
-from the directory containing it and discards the contents of the file.
-The user must have write permission in the containing directory.
-If
-.I file
-is a directory, it must be empty.
-.SH SOURCE
-.B /usr/local/plan9/src/libc/9syscall
-.SH SEE ALSO
-.IR intro (3),
-.IR remove (5),
-the description of
-.B ORCLOSE
-in
-.IR open (3).
-.SH DIAGNOSTICS
-Sets
-.IR errstr .