Update documentation for the types change, with some extra fixes

 Also remove --enable-replace-libc from configure

12 files changed, 143 insertions, 135 deletions

diff --git a/doc/libstddjb/alloc.html b/doc/libstddjb/alloc.html
index 083b5de..615e67d 100644
--- a/doc/libstddjb/alloc.html
+++ b/doc/libstddjb/alloc.html
@@ -65,7 +65,7 @@ should favor them over basic interfaces like <tt>malloc()</tt>.
 <h2> Functions </h2>
 
 <p>
-<code> char *alloc (unsigned int len) </code> <br />
+<code> char *alloc (size_t len) </code> <br />
 Allocates a block of <em>len</em> bytes in the heap and returns a pointer
 to the start of the block (or NULL if it failed). Though the pointer type
 is <tt>char *</tt>, the block of memory is correctly aligned for any type
@@ -80,7 +80,7 @@ Frees the block of heap memory pointed to by <em>p</em>.
 </p>
 
 <p>
-<code> int alloc_realloc (char **p, unsigned int newlen) </code> <br />
+<code> int alloc_realloc (char **p, size_t newlen) </code> <br />
 Redimension the block of heap memory pointed to by *<em>p</em> to
 <em>newlen</em> bytes. The block may have to be moved, in which case
 *<em>p</em> will be modified. Normally returns 1; if an error occurred,
@@ -89,7 +89,7 @@ modified.
 </p>
 
 <p>
-<code> int alloc_re (char **p, unsigned int oldlen, unsigned int newlen) </code> <br />
+<code> int alloc_re (char **p, size_t oldlen, size_t newlen) </code> <br />
 Legacy interface for reallocation. It works like <tt>alloc_realloc</tt>,
 except that the original block length must be provided as the <em>oldlen</em>
 argument.
diff --git a/doc/libstddjb/allreadwrite.html b/doc/libstddjb/allreadwrite.html
index f71ce09..2ab8d8f 100644
--- a/doc/libstddjb/allreadwrite.html
+++ b/doc/libstddjb/allreadwrite.html
@@ -44,19 +44,15 @@ use higher-level APIs such as <a href="buffer.html>buffer</a> and
 <h2> Function types </h2>
 
 <p>
-<code> typedef int iofunc_t (int fd, char *buf, unsigned int len) </code> <br />
+<code> typedef ssize_t iofunc_t (int fd, char *buf, size_t len) </code> <br />
 This is the simplified type of IO functions such as
 <a href="http://www.opengroup.org/onlinepubs/9699919799/functions/read.html">read()</a>
 and
 <a href="http://www.opengroup.org/onlinepubs/9699919799/functions/write.html">write()</a>.
-Unless your system's <tt>int</tt> is 64-bit, skalibs - which has been
-optimized for small systems - does not support IO operations of more than
-2 GB of data, for the sake of simplicity. In any case, it's always
-possible to send data in several smaller chunks.
 </p>
 
 <p>
-<code> typedef unsigned int alliofunc_t (int fd, char *buf, unsigned int len) </code> <br />
+<code> typedef size_t alliofunc_t (int fd, char *buf, size_t len) </code> <br />
 This is the type of an IO operation that expects <em>all</em> of its
 <em>len</em> bytes to be sent or received, and that will loop around a
 lower-level IO function until either <em>len</em> bytes have been
@@ -68,7 +64,7 @@ it means that an error has occurred and <tt>errno</tt> is set.
 <h2> Functions </h2>
 
 <p>
-<code> int sanitize_read (int r) </code> <br />
+<code> ssize_t sanitize_read (ssize_t r) </code> <br />
 Reading functions such as <tt>read()</tt> and <tt>fd_read</tt> return
 a positive number when they succeed, -1 when they fail, and 0 when they
 read an EOF. No data available on the descriptor when reading in
@@ -87,7 +83,7 @@ on reading.)
 </p>
 
 <p>
-<code> unsigned int allreadwrite (iofunc_t *f, int fd, char *s, unsigned int len) </code> <br />
+<code> size_t allreadwrite (iofunc_t *f, int fd, char *s, size_t len) </code> <br />
 *<em>f</em> must be a basic reading or writing function such as
 <tt>fd_read</tt> or <tt>fd_write</tt>. <tt>allreadwrite()</tt> performs
 *<em>f</em> on <em>fd</em>, <em>s</em> and <em>len</em> until <em>len</em>
@@ -99,35 +95,35 @@ set errno to EWOULDBLOCK or EAGAIN.
 </p>
 
 <p>
-<code> int fd_read (int fd, char *s, unsigned int len) </code> <br />
+<code> ssize_t fd_read (int fd, char *s, size_t len) </code> <br />
 <a href="safewrappers.html">Safe wrapper</a> around the
 <a href="http://www.opengroup.org/onlinepubs/9699919799/functions/read.html">read()</a>
 function.
 </p>
 
 <p>
-<code> int fd_write (int fd, char const *s, unsigned int len) </code> <br />
+<code> ssize_t fd_write (int fd, char const *s, size_t len) </code> <br />
 <a href="safewrappers.html">Safe wrapper</a> around the
 <a href="http://www.opengroup.org/onlinepubs/9699919799/functions/write.html">write()</a>
 function.
 </p>
 
 <p>
-<code> int fd_recv (int fd, char *s, unsigned int len, unsigned int flags) </code> <br />
+<code> ssize_t fd_recv (int fd, char *s, size_t len, unsigned int flags) </code> <br />
 <a href="safewrappers.html">Safe wrapper</a> around the
 <a href="http://www.opengroup.org/onlinepubs/9699919799/functions/recv.html">recv()</a>
 function.
 </p>
 
 <p>
-<code> int fd_send (int fd, char const *s, unsigned int len, unsigned int flags) </code> <br />
+<code> ssize_t fd_send (int fd, char const *s, size_t len, unsigned int flags) </code> <br />
 <a href="safewrappers.html">Safe wrapper</a> around the
 <a href="http://www.opengroup.org/onlinepubs/9699919799/functions/send.html">send()</a>
 function.
 </p>
 
 <p>
-<code> unsigned int allread (int fd, char *s, unsigned int len) </code> <br />
+<code> size_t allread (int fd, char *s, size_t len) </code> <br />
 Equivalent to <code> allreadwrite(&fd_read, fd, s, len) </code>: attempts
 to read <em>len</em> bytes from <em>fd</em> into <em>s</em>, looping around
 <tt>fd_read()</tt> if necessary, until either <em>len</em> bytes are read or
@@ -135,7 +131,7 @@ an error occurs. EOF is reported as EPIPE.
 </p>
 
 <p>
-<code> unsigned int allwrite (int fd, char const *s, unsigned int len) </code> <br />
+<code> size_t allwrite (int fd, char const *s, size_t len) </code> <br />
 Equivalent to <code> allreadwrite((iofunc_t *)&fd_write, fd, s, len) </code>:
 attempts to write <em>len</em> bytes from <em>s</em> to <em>fd</em>, looping
 around <tt>fd_write()</tt> if necessary, until either <em>len</em> bytes are
diff --git a/doc/libstddjb/bitarray.html b/doc/libstddjb/bitarray.html
index 0695ff1..b727975 100644
--- a/doc/libstddjb/bitarray.html
+++ b/doc/libstddjb/bitarray.html
@@ -47,69 +47,69 @@ can grow in size should be stored in a
 <h2> Functions </h2>
 
 <p>
-<code> unsigned int bitarray_div8 (unsigned int n) </code> <br />
+<code> size_t bitarray_div8 (size_t n) </code> <br />
 Returns the minimum number of bytes needed to store a field of <em>n</em> bits.
 
 </p>
 
 <p>
-<code> void bitarray_clearsetn (unsigned char *s, unsigned int start, unsigned int len, int h) </code> <br />
+<code> void bitarray_clearsetn (unsigned char *s, size_t start, size_t len, int h) </code> <br />
 Sets (if <em>h</em> is nonzero) or clears (if <em>h</em> is zero)
 <em>len</em> bits in field <em>s</em>, starting at bit <em>start</em>.
 </p>
 
 <p>
-<code> void bitarray_clearn (unsigned char *s, unsigned int start, unsigned int len) </code> <br />
+<code> void bitarray_clearn (unsigned char *s, size_t start, size_t len) </code> <br />
 Clears <em>len</em> bits in field <em>s</em>, starting at bit <em>start</em>.
 </p>
 
 <p>
-<code> void bitarray_setn (unsigned char *s, unsigned int start, unsigned int len) </code> <br />
+<code> void bitarray_setn (unsigned char *s, size_t start, size_t len) </code> <br />
 Sets <em>len</em> bits in field <em>s</em>, starting at bit <em>start</em>.
 </p>
 
 <p>
-<code> int bitarray_peek (unsigned char const *s, unsigned int n) </code> <br />
+<code> int bitarray_peek (unsigned char const *s, size_t n) </code> <br />
 Returns the value of the <em>n</em>th bit in field <em>s</em>.
 </p>
 
 <p>
-<code> void bitarray_poke (unsigned char *s, unsigned int n, int h) </code> <br />
+<code> void bitarray_poke (unsigned char *s, size_t n, int h) </code> <br />
 Sets (if <em>h</em> is nonzero) or clears (if <em>h</em> is zero)
 the <em>n</em>th bit in field <em>s</em>.
 </p>
 
 <p>
-<code> void bitarray_clear (unsigned char *s, unsigned int n) </code> <br />
+<code> void bitarray_clear (unsigned char *s, size_t n) </code> <br />
 Clears the <em>n</em>th bit in field <em>s</em>.
 </p>
 
 <p>
-<code> void bitarray_set (unsigned char *s, unsigned int n) </code> <br />
+<code> void bitarray_set (unsigned char *s, size_t n) </code> <br />
 Sets the <em>n</em>th bit in field <em>s</em>.
 </p>
 
 <p>
-<code> int bitarray_testandpoke (unsigned char *s, unsigned int n, int h) </code> <br />
+<code> int bitarray_testandpoke (unsigned char *s, size_t n, int h) </code> <br />
 Sets (if <em>h</em> is nonzero) or clears (if <em>h</em> is zero)
 the <em>n</em>th bit in field <em>s</em>,
 and returns the previous value of that bit.
 </p>
 
 <p>
-<code> int bitarray_testandclear (unsigned char *s, unsigned int n) </code> <br />
+<code> int bitarray_testandclear (unsigned char *s, size_t n) </code> <br />
 Clear the <em>n</em>th bit in field <em>s</em>,
 and returns the previous value of that bit.
 </p>
 
 <p>
-<code> int bitarray_testandset (unsigned char *s, unsigned int n) </code> <br />
+<code> int bitarray_testandset (unsigned char *s, size_t n) </code> <br />
 Sets the <em>n</em>th bit in field <em>s</em>,
 and returns the previous value of that bit.
 </p>
 
 <p>
-<code> unsigned int bitarray_first (unsigned char const *s, unsigned int len, int h) </code> <br />
+<code> size_t bitarray_first (unsigned char const *s, size_t len, int h) </code> <br />
 Returns the number of the first set (if <em>h</em> is nonzero) or clear
 (if <em>h</em> is zero) bit in <em>s</em>, <em>len</em> being
 the total number of bits. If all bits in <em>s</em> are the negation of
@@ -117,26 +117,26 @@ the total number of bits. If all bits in <em>s</em> are the negation of
 </p>
 
 <p>
-<code> unsigned int bitarray_firstclear (unsigned char const *s, unsigned int len) </code> <br />
+<code> size_t bitarray_firstclear (unsigned char const *s, size_t len) </code> <br />
 Returns the number of the first clear bit in <em>s</em>, <em>len</em> being
 the total number of bits. If all bits in <em>s</em> are set, <em>len</em> is returned.
 </p>
 
 <p>
-<code> unsigned int bitarray_firstclear_skip (unsigned char const *s, unsigned int len, unsigned int skip) </code> <br />
+<code> size_t bitarray_firstclear_skip (unsigned char const *s, size_t len, size_t skip) </code> <br />
 Like <tt>bitarray_firstclear</tt>, but the first <em>skip</em> bits are
 ignored: the function cannot return less than <em>skip</em>. It is a
 programming error if <em>skip</em> &gt; <em>len</em>.
 </p>
 
 <p>
-<code> unsigned int bitarray_firstset (unsigned char const *s, unsigned int len) </code> <br />
+<code> size_t bitarray_firstset (unsigned char const *s, size_t len) </code> <br />
 Returns the number of the first set bit in <em>s</em>, <em>len</em> being
 the total number of bits. If all bits in <em>s</em> are clear, <em>len</em> is returned.
 </p>
 
 <p>
-<code> unsigned int bitarray_firstset_skip (unsigned char const *s, unsigned int len, unsigned int skip) </code> <br />
+<code> size_t bitarray_firstset_skip (unsigned char const *s, size_t len, size_t skip) </code> <br />
 Like <tt>bitarray_firstset</tt>, but the first <em>skip</em> bits are
 ignored: the function cannot return less than <em>skip</em>. It is a
 programming error if <em>skip</em> &gt; <em>len</em>.
diff --git a/doc/libstddjb/djbtime.html b/doc/libstddjb/djbtime.html
index d20131e..869b90b 100644
--- a/doc/libstddjb/djbtime.html
+++ b/doc/libstddjb/djbtime.html
@@ -39,7 +39,7 @@ other time formats and user-friendly representations.
 <ul>
  <li> TAI time with 1-second precision is represented as a <a href="tai.html">tai_t</a>. </li>
  <li> TAI time with more precision is represented as a <a href="tai.html">tain_t</a>. </li>
- <li> UTC time is represented as an <a href="headers.html#uint64">unsigned 64-bit integer</a>
+ <li> UTC time is represented as an unsigned 64-bit integer
 equal to 2^62 added to the number of seconds since the Epoch. It's a trivial extension of
 the standard 32-bit Unix time that will expire in 2038. </li>
  <li> Broken-down GMT or local time with more than a 1-second precision is stored in a
@@ -52,7 +52,7 @@ field and an unsigned long <em>nano</em> field. </li>
 <h3> UTC </h3>
 
 <p>
-<code> int utc_from_tai (uint64 *u, tai_t const *t) </code> <br />
+<code> int utc_from_tai (uint64_t *u, tai_t const *t) </code> <br />
 Converts the absolute TAI64 time in *<em>t</em> to an UTC time, stored in
 *<em>u</em> as an unsigned 64-bit integer. *<em>u</em> is actually 2^62
 plus the number of seconds since the Epoch.
@@ -61,7 +61,7 @@ error occurs.
 </p>
 
 <p>
-<code> int tai_from_utc (tai_t *t, uint64 u) </code> <br />
+<code> int tai_from_utc (tai_t *t, uint64_t u) </code> <br />
 Converts the UTC time in <em>u</em>, stored
 as an unsigned 64-bit integer (2^62 plus the number of seconds since
 the Epoch), to a TAI64 time in *<em>t</em>.
@@ -72,7 +72,7 @@ error occurs.
 <h3> NTP </h3>
 
 <p>
-<code> int ntp_from_tain (uint64 *ntp, tain_t const *a) </code> <br />
+<code> int ntp_from_tain (uint64_t *ntp, tain_t const *a) </code> <br />
 Converts the absolute TAI64N time in *<em>a</em> to a 64-bit NTP timestamp,
 stored in *<em>ntp</em>. The higher 32 bits of *<em>ntp</em> represent a number
 of seconds ; the lower 32 bits are the fractional part of the timestamp.
@@ -82,7 +82,7 @@ error occurs (for instance:
 </p>
 
 <p>
-<code> int tain_from_ntp (tain_t *a, uint64 ntp) </code> <br />
+<code> int tain_from_ntp (tain_t *a, uint64_t ntp) </code> <br />
 Converts the NTP timestamp in <em>ntp</em> to a TAI64N time in
 *<em>a</em>.
 The function returns 1 if it succeeds, or 0 (and sets errno) if an
@@ -110,7 +110,7 @@ in a struct tm).
 </p>
 
 <p>
-<code> int localtm_from_utc (struct tm *tm, uint64 u, int lo) </code> <br />
+<code> int localtm_from_utc (struct tm *tm, uint64_t u, int lo) </code> <br />
 Converts the UTC time in <em>u</em> to broken-down GMT (if
 <em>lo</em> is zero) or local (if <em>lo</em> is nonzero) time in
 *<em>tm</em>.
@@ -120,7 +120,7 @@ in a struct tm).
 </p>
 
 <p>
-<code> int localtm_from_sysclock (struct tm *tm, uint64 u, int lo) </code> <br />
+<code> int localtm_from_sysclock (struct tm *tm, uint64_t u, int lo) </code> <br />
 Converts the time in <em>u</em> to broken-down GMT (if
 <em>lo</em> is zero) or local (if <em>lo</em> is nonzero) time in
 *<em>tm</em>. <em>u</em> will be interpreted as a TAI-10 value (with
@@ -131,7 +131,7 @@ in a struct tm).
 </p>
 
 <p>
-<code> int utc_from_localtm (uint64 *u, struct tm const *tm) </code> <br />
+<code> int utc_from_localtm (uint64_t *u, struct tm const *tm) </code> <br />
 Converts the broken-down local time in *<em>tm</em> to an UTC value
 in *<em>u</em>.
 The function returns 1 if it succeeds, or 0 (and sets errno) if an
@@ -147,7 +147,7 @@ error occurs.
 </p>
 
 <p>
-<code> int sysclock_from_localtm (uint64 *u, struct tm const *tm) </code> <br />
+<code> int sysclock_from_localtm (uint64_t *u, struct tm const *tm) </code> <br />
 Converts the broken-down local time in *<em>tm</em> to a value
 in *<em>u</em> - either TAI-10 or UTC depending on your system clock.
 The function returns 1 if it succeeds, or 0 (and sets errno) if an
@@ -163,7 +163,7 @@ a broken-down time and a nanosecond count:
 struct localtmn_s
 {
   struct tm tm ;
-  uint32 nano ;
+  uint32_t nano ;
 } ;
 </pre>
 
diff --git a/doc/libstddjb/djbunix.html b/doc/libstddjb/djbunix.html
index b698069..5e9cae1 100644
--- a/doc/libstddjb/djbunix.html
+++ b/doc/libstddjb/djbunix.html
@@ -140,7 +140,7 @@ Safe wrapper around
 </p>
 
 <p>
-<code> int fd_chown (int fd, unsigned int uid, unsigned int gid) </code> <br />
+<code> int fd_chown (int fd, uid_t uid, gid_t gid) </code> <br />
 Safe wrapper around
 <a href="http://www.opengroup.org/onlinepubs/9699919799/functions/fchown.html">fchown()</a>.
 This function requires root privileges.
@@ -177,7 +177,7 @@ in Linux 2.6.17 and later </li>
 </ul>
 
 <p>
-<code> unsigned int fd_catn (int from, int to, unsigned int n) </code> <br />
+<code> size_t fd_catn (int from, int to, size_t n) </code> <br />
 Synchronously copies at most <em>n</em> bytes from fd <em>from</em> to fd <em>to</em>.
 Returns the total number of transmitted bytes; sets errno if this number
 is lesser than <em>n</em>. EOF is reported as EPIPE. See above for zero-copy
@@ -319,16 +319,6 @@ group database. This is a privileged operation.
 Returns -1 and sets errno if it fails; returns 0 if it succeeds.
 </p>
 
-<p>
-<code> int prot_gid (int gid) </code> <br />
-Alias to <a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/setgid.html">setgid</a>.
-</p>
-
-<p>
-<code> int prot_uid (int uid) </code> <br />
-Alias to <a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/setuid.html">setuid</a>.
-</p>
-
 <h3> Executable search and execution, and environment </h3>
 
 <p>
@@ -382,7 +372,7 @@ simply exiting 0.
 </p>
 
 <p>
-<code> void pathexec_r_name (char const *file, char const *const *argv, char const *const *envp, unsigned int envlen, char const *modifs, unsigned int modiflen) </code> <br />
+<code> void pathexec_r_name (char const *file, char const *const *argv, char const *const *envp, size_t envlen, char const *modifs, size_t modiflen) </code> <br />
 Alters <em>envp</em> (which does not have to be NULL-terminated, but the
 number <em>envlen</em> of elements must be provided) with the modifier
 string <em>modifs</em> of length <em>modiflen</em>, then performs
@@ -390,7 +380,7 @@ string <em>modifs</em> of length <em>modiflen</em>, then performs
 </p>
 
 <p>
-<code> void pathexec_r (char const *const *argv, char const *const *envp, unsigned int envlen, char const *modifs, unsigned int modiflen) </code> <br />
+<code> void pathexec_r (char const *const *argv, char const *const *envp, size_t envlen, char const *modifs, size_t modiflen) </code> <br />
 Same as <tt>pathexec_r_name</tt>, except that the <em>file</em> argument is read from <em>argv</em>[0].
 </p>
 
@@ -404,7 +394,7 @@ Returns 1 if it succeeds and 0 (and sets errno) if it fails.
 </p>
 
 <p>
-<code> void pathexec_fromenv (char const *const *argv, char const *const *envp, unsigned int envlen) </code> <br />
+<code> void pathexec_fromenv (char const *const *argv, char const *const *envp, size_t envlen) </code> <br />
 Performs <tt>pathexec_r()</tt> with the given arguments and the hidden modifier
 string.
 </p>
@@ -430,7 +420,7 @@ to manipulate modifier strings and environments.
 <h3> Forking children </h3>
 
 <p>
-<code> int doublefork () </code> <br />
+<code> pid_t doublefork () </code> <br />
 Performs a double fork. Returns -1 if it fails (and
 sets errno, EINTR meaning that the intermediate process
 was killed by a signal), 0 if the current process is the grandchild,
@@ -512,7 +502,7 @@ be unchanged.
 </p>
 
 <p>
-<code> int wait_nohang (int *wstat) </code> <br />
+<code> pid_t wait_nohang (int *wstat) </code> <br />
 Instantly reaps one zombie, and stores the status information into
 *<em>wstat</em>.
 Returns the PID of the reaped zombie if it succeeds, 0 if there was
@@ -522,13 +512,13 @@ or -1 (and sets errno) if it fails.
 </p>
 
 <p>
-<code> int waitpid_nointr (pid_t pid, int *wstat, int flags) </code> <br />
+<code> pid_t waitpid_nointr (pid_t pid, int *wstat, int flags) </code> <br />
 Safe wrapper around
 <a href="http://www.opengroup.org/onlinepubs/9699919799/functions/waitpid.html">waitpid()</a>.
 </p>
 
 <p>
-<code> int wait_pid_nohang (pid_t pid, int *wstat) </code> <br />
+<code> pid_t wait_pid_nohang (pid_t pid, int *wstat) </code> <br />
 Instantly reaps an undetermined number of zombies until it finds <em>pid</em>.
 Stores the status information for dead <em>pid</em> into *<em>wstat</em>.
 Returns <em>pid</em> if it succeeds, 0 if there was
@@ -587,33 +577,27 @@ Returns 1 if it succeeds, and 0 (and sets errno) if it fails.
 </p>
 
 <p>
-<code> int openreadclose (char const *file, stralloc *sa, unsigned int dummy) </code> <br />
-Legacy interface for <code>openslurpclose(sa, file)</code>. The <em>dummy</em>
-argument is unused. Returns 0 if it succeeds, and -1 (and sets errno) if it fails.
-</p>
-
-<p>
-<code> int openreadnclose (char const *file, char *s, unsigned int n) </code> <br />
+<code> ssize_t openreadnclose (char const *file, char *s, size_t n) </code> <br />
 Reads at most <em>n</em> bytes from file <em>file</em> into preallocated
 buffer <em>s</em>. Returns -1 (and sets errno) if it fails; else returns the
 number of read bytes. If that number is not <em>n</em>, errno is set to EPIPE.
 </p>
 
 <p>
-<code> int openreadnclose_nb (char const *file, char *s, unsigned int n) </code> <br />
+<code> ssize_t openreadnclose_nb (char const *file, char *s, size_t n) </code> <br />
 Like <tt>openreadnclose</tt>, but can fail with EAGAIN if the file cannot be
 immediately read (for instance if it's a named pipe or other special file).
 </p>
 
 <p>
-<code> int openreadfileclose (char const *file, stralloc *sa, unsigned int n) </code> <br />
+<code> int openreadfileclose (char const *file, stralloc *sa, size_t n) </code> <br />
 Reads at most <em>n</em> bytes from file <em>file</em> into the *<em>sa</em>
 stralloc, which is grown (if needed) to <em>just</em> accommodate the file
 size. Returns 1 if it succeeds and 0 (and sets errno) if it fails.
 </p>
 
 <p>
-<code> int openwritenclose_unsafe_internal (char const *file, char const *s, unsigned int len, uint64 *dev, uint64 *ino, unsigned char dosync) </code> <br />
+<code> int openwritenclose_unsafe_internal (char const *file, char const *s, size_t len, dev_t *dev, ino_t *ino, int dosync) </code> <br />
 Writes the <em>n</em> bytes stored at <em>s</em> into file <em>file</em>.
 The previous contents of <em>file</em> are destroyed even if the function
 fails. If <em>dosync</em> is nonzero, the new contents of <em>file</em>
@@ -623,16 +607,16 @@ The function returns 1 if it succeeds, or 0 (and sets errno) if it fails.
 </p>
 
 <p>
-<code> int openwritenclose_unsafe (char const *file, char const *s, unsigned int len) <br />
-int openwritenclose_unsafe_sync (char const *file, char const *s, unsigned int len) <br />
-int openwritenclose_unsafe_devino (char const *file, char const *s, unsigned int len, uint64 *dev, uint64 *ino) <br />
-int openwritenclose_unsafe_devino_sync (char const *file, char const *s, unsigned int len, uint64 *dev, uint64 *ino) </code> <br />
+<code> int openwritenclose_unsafe (char const *file, char const *s, size_t len) <br />
+int openwritenclose_unsafe_sync (char const *file, char const *s, size_t len) <br />
+int openwritenclose_unsafe_devino (char const *file, char const *s, size_t len, dev_t *dev, ino_t *ino) <br />
+int openwritenclose_unsafe_devino_sync (char const *file, char const *s, size_t len, dev_t *dev, ino_t *ino) </code> <br />
 Trivial shortcuts around <tt>openwritenclose_unsafe_internal()</tt>. The
 reader can easily figure out what they do.
 </p>
 
 <p>
-<code> int openwritenclose_suffix_internal (char const *file, char const *s, unsigned int len, uint64 *dev, uint64 *ino, unsigned char dosync, char const *suffix) </code> <br />
+<code> int openwritenclose_suffix_internal (char const *file, char const *s, size_t len, dev_t *dev, ino_t *ino, int dosync, char const *suffix) </code> <br />
 Writes the <em>n</em> bytes stored at <em>s</em> into file <em>file</em>,
 by first writing into <em>filesuffix</em> and atomically renaming
 <em>filesuffix</em> to <em>file</em>. IOW, the old contents of <em>file</em>
@@ -645,43 +629,43 @@ The function returns 1 if it succeeds, or 0 (and sets errno) if it fails.
 </p>
 
 <p>
-<code> int openwritenclose_suffix (char const *file, char const *s, unsigned int len, char const *suffix) <br />
-int openwritenclose_suffix_sync (char const *file, char const *s, unsigned int len, char const *suffix) <br />
-int openwritenclose_suffix_devino (char const *file, char const *s, unsigned int len, uint64 *dev, uint64 *ino, char const *suffix) <br />
-int openwritenclose_suffix_devino_sync (char const *file, char const *s, unsigned int len, uint64 *dev, uint64 *ino, char const *suffix) </code> <br />
+<code> int openwritenclose_suffix (char const *file, char const *s, size_t len, char const *suffix) <br />
+int openwritenclose_suffix_sync (char const *file, char const *s, size_t len, char const *suffix) <br />
+int openwritenclose_suffix_devino (char const *file, char const *s, size_t len, dev_t *dev, ino_t *ino, char const *suffix) <br />
+int openwritenclose_suffix_devino_sync (char const *file, char const *s, size_t len, dev_t *dev, ino_t *ino, char const *suffix) </code> <br />
 Trivial shortcuts around <tt>openwritenclose_suffix_internal()</tt>. The
 reader can easily figure out what they do.
 </p>
 
 <p>
-<code> int openwritevnclose_unsafe_internal (char const *file, siovec_t const *v, unsigned int vlen, uint64 *dev, uint64 *ino, unsigned char dosync) </code> <br />
+<code> int openwritevnclose_unsafe_internal (char const *file, struct iovec const *v, unsigned int vlen, dev_t *dev, ino_t *ino, int dosync) </code> <br />
 Like <tt>openwritenclose_unsafe_internal</tt>, but the content to
 write is taken from a
-<a href="siovec.html">siovec_t</a> scatter/gather array of <em>vlen</em>
+<a href="siovec.html">scatter/gather array</a> of <em>vlen</em>
 elements instead of a single string.
 </p>
 
 <p>
-<code> int openwritevnclose_unsafe (char const *file, siovec_t const *v, unsigned int vlen) <br />
-int openwritevnclose_unsafe_sync (char const *file, siovec_t const *v, unsigned int vlen) <br />
-int openwritevnclose_unsafe_devino (char const *file, siovec_t const *v, unsigned int vlen, uint64 *dev, uint64 *ino) <br />
-int openwritevnclose_unsafe_devino_sync (char const *file, siovec_t const *v, unsigned int vlen, uint64 *dev, uint64 *ino) </code> <br />
+<code> int openwritevnclose_unsafe (char const *file, struct iovec const *v, unsigned int vlen) <br />
+int openwritevnclose_unsafe_sync (char const *file, struct iovec const *v, unsigned int vlen) <br />
+int openwritevnclose_unsafe_devino (char const *file, struct iovec const *v, unsigned int vlen, dev_t *dev, ino_t *ino) <br />
+int openwritevnclose_unsafe_devino_sync (char const *file, struct iovec const *v, unsigned int vlen, dev_t *dev, ino_t *ino) </code> <br />
 Trivial wrappers around <tt>openwritevnclose_unsafe_internal()</tt>.
 </p>
 
 <p>
-<code> int openwritevnclose_suffix_internal (char const *file, siovec_t const *v, unsigned int vlen, uint64 *dev, uint64 *ino, unsigned char dosync, char const *suffix) </code> <br />
+<code> int openwritevnclose_suffix_internal (char const *file, struct iovec const *v, unsigned int vlen, dev_t *dev, ino_t *ino, int dosync, char const *suffix) </code> <br />
 Like <tt>openwritenclose_suffix_internal</tt>, but the content to
 write is taken from a
-<a href="siovec.html">siovec_t</a> scatter/gather array of <em>vlen</em>
+<a href="siovec.html">scatter/gather array</a> of <em>vlen</em>
 elements instead of a single string.
 </p>
 
 <p>
-<code> int openwritenclose_suffix (char const *file, char const *s, unsigned int len, char const *suffix) <br />
-int openwritenclose_suffix_sync (char const *file, char const *s, unsigned int len, char const *suffix) <br />
-int openwritenclose_suffix_devino (char const *file, char const *s, unsigned int len, uint64 *dev, uint64 *ino, char const *suffix) <br />
-int openwritenclose_suffix_devino_sync (char const *file, char const *s, unsigned int len, uint64 *dev, uint64 *ino, char const *suffix) </code> <br />
+<code> int openwritenclose_suffix (char const *file, char const *s, size_t len, char const *suffix) <br />
+int openwritenclose_suffix_sync (char const *file, char const *s, size_t len, char const *suffix) <br />
+int openwritenclose_suffix_devino (char const *file, char const *s, size_t len, dev_t *dev, ino_t *ino, char const *suffix) <br />
+int openwritenclose_suffix_devino_sync (char const *file, char const *s, size_t len, dev_t *dev, ino_t *ino, char const *suffix) </code> <br />
 Trivial wrappers around <tt>openwritevnclose_suffix_internal()</tt>.
 </p>
 
@@ -706,7 +690,7 @@ Returns 0 if it succeeds or -1 (and sets errno) if it fails.
 </p>
 
 <p>
-<code> int rm_rf_in_tmp (stralloc *tmp, unsigned int n) </code> <br />
+<code> int rm_rf_in_tmp (stralloc *tmp, size_t n) </code> <br />
 Deletes a filesystem subtree, using *<em>tmp</em>
 as heap-allocated temporary space.
 Returns 0 if it succeeds or -1 (and sets errno) if it fails.
@@ -763,14 +747,14 @@ Returns 0 if it succeeds and -1 (and sets errno) if it fails.
 </p>
 
 <p>
-<code> int sabasename (stralloc *sa, char const *s, unsigned int len) </code> <br />
+<code> int sabasename (stralloc *sa, char const *s, size_t len) </code> <br />
 Appends the basename of filename <em>s</em> (of length <em>len</em>)
 to *<em>sa</em>.
 Returns 1 if it succeeds and 0 (and sets errno) if it fails.
 </p>
 
 <p>
-<code> int sadirname (stralloc *sa, char const *s, unsigned int len) </code> <br />
+<code> int sadirname (stralloc *sa, char const *s, size_t len) </code> <br />
 Appends the dirname of filename <em>s</em> (of length <em>len</em>)
 to *<em>sa</em>.
 Returns 1 if it succeeds and 0 (and sets errno) if it fails.
diff --git a/doc/libstddjb/gccattributes.html b/doc/libstddjb/gccattributes.html
index 1e66aee..71a5e97 100644
--- a/doc/libstddjb/gccattributes.html
+++ b/doc/libstddjb/gccattributes.html
@@ -33,7 +33,7 @@ of gcc does not support the wanted attribute.
 </p>
 
 <pre>
- extern unsigned int str_len (char const *) gccattr_pure ;
+ extern size_t str_len (char const *) gccattr_pure ;
 </pre>
 
 <p>
diff --git a/doc/libstddjb/index.html b/doc/libstddjb/index.html
index 6ecfeb2..63a786b 100644
--- a/doc/libstddjb/index.html
+++ b/doc/libstddjb/index.html
@@ -78,6 +78,9 @@ functions writing into <a href="buffer.html">buffers</a> or <a href="bufalloc.ht
 how to safely handle signals in event loops) </li>
  <li> <a href="sgetopt.html">skalibs/sgetopt.h</a>: <tt>getopt()</tt>-style command-line options management </li>
  <li> <a href="sig.html">skalibs/sig.h</a>: safe signal management </li>
+ <li> <a href="siovec.html">skalibs/siovec.h</a>: scatter/gather IO primitives working with an
+<a href="http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_uio.h.html">iovec</a>
+structure </li>
  <li> <a href="skamisc.html">skalibs/skamisc.h</a>: general string quoting and parsing; miscellaneous, unclassifiable functions </li>
  <li> <a href="socket.html">skalibs/socket.h</a>: INET domain sockets </li>
  <li> <a href="stralloc.html">skalibs/stralloc.h</a>: advanced management of dynamically allocated strings </li>
@@ -97,11 +100,9 @@ includes them.
  <li> skalibs/uint16.h: operations with 16-bit unsigned integers </li>
  <li> skalibs/uint32.h: operations with 32-bit unsigned integers </li>
  <li> skalibs/uint64.h: operations with 64-bit unsigned integers </li>
- <li> skalibs/ushort.h: portable helpers for the "unsigned short" basic type </li>
- <li> skalibs/uint.h: portable helpers for the "unsigned int" basic type </li>
- <li> skalibs/ulong.h: portable helpers for the "unsigned long" basic type </li>
+ <li> skalibs/types.h: portable helpers for common Unix types: size_t,
+uid_t, gid_t, pid_t, time_t, dev_t and ino_t. </li>
  <li> skalibs/error.h: portable macros for errno management </li>
- <li> skalibs/gidstuff.h: helpers for the "gid_t" type </li>
  <li> skalibs/setgroups.h: stub for the setgroups() function, for systems that do not define it</li>
  <li> <a href="ip46.html">skalibs/ip46.h</a>: IPv4/IPv6 abstraction layer </li>
 </ul>
@@ -115,12 +116,10 @@ are not associated with any code and are mostly self-explanatory:
  <li> <a href="gccattributes.html">skalibs/gccattributes.h</a>: wrappers around a few GCC-specific optimizations </li>
  <li> skalibs/diuint.h: for associative arrays of unsigned integers </li>
  <li> skalibs/diuint32.h: for associative arrays of 32-bit unsigned integers </li>
+ <li> skalibs/disize.h: for associative arrays of size_t </li>
  <li> skalibs/environ.h: declaration of the <em>environ</em> variable </li>
  <li> skalibs/nsig.h: the number of system signals, for systems that do not define it </li>
  <li> skalibs/nonposix.h: feature test macros for non-POSIX-compliant systems </li>
- <li> skalibs/siovec.h:
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_uio.h.html">iovec</a>-like
-structure for scatter/gather IO operations </li>
 </ul>
 
 </body>
diff --git a/doc/libstddjb/iopause.html b/doc/libstddjb/iopause.html
index ff8727c..bcefb91 100644
--- a/doc/libstddjb/iopause.html
+++ b/doc/libstddjb/iopause.html
@@ -29,12 +29,12 @@ and implemented in the <tt>libskarnet.a</tt> or <tt>libskarnet.so</tt> library.
 
 <p>
  <tt>iopause</tt> is the skalibs API for event loop selection. It's a
-wrapper around the system's
+wrapper around the system's <tt>ppoll()</tt> or
 <a href="http://www.opengroup.org/onlinepubs/9699919799/functions/poll.html">poll()</a>
 (if available) or
 <a href="http://www.opengroup.org/onlinepubs/9699919799/functions/select.html">select()</a>
-(if <tt>poll()</tt> is unavailable) function. It
-works around some system-dependent quirks; also it works with
+(if neither <tt>ppoll()</tt> n or <tt>poll()</tt> is available) function.
+ It works around some system-dependent quirks; also it works with
 <em>absolute dates</em> instead of timeouts. This is a good thing:
 see below.
 </p>
@@ -175,22 +175,23 @@ it is recommended to use this function instead of the lower-level
 <h3> Underlying implementations </h3>
 
 <p>
- <tt>iopause</tt> is an alias to either <tt>iopause_poll</tt> or
-or <tt>iopause_select</tt>. By default, it is aliased to <tt>iopause_poll</tt>; to
-alias it to <tt>iopause_select</tt> instead, configure skalibs with the
-<tt>--enable-iopause-select</tt> option.
+ <tt>iopause</tt> is an alias to one of <tt>iopause_ppoll</tt>, <tt>iopause_poll</tt> or
+<tt>iopause_select</tt>. It is always aliased to <tt>iopause_ppoll</tt> if
+the <tt>ppoll()</tt> function is available on the system; else, it's aliased to
+<tt>iopause_poll</tt> by default, and users can alias it to <tt>iopause_select</tt>
+instead if they configure skalibs with the <tt>--enable-iopause-select</tt> option.
 </p>
 
 <p>
-Both <tt>iopause_poll</tt> and <tt>iopause_select</tt> are implemented on top of the
-<a href="http://man7.org/linux/man-pages/man2/ppoll.2.html">ppoll()</a> system call
-if it is available; but if it is not, then <tt>iopause_poll</tt> defaults to
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/poll.html">poll()</a>,
-which has a more comfortable API than
+<a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/poll.html">poll()</a>
+has a more comfortable API than
 <a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/select.html">select()</a>,
-but a maximum precision of 1 millisecond which might not be enough for some applications; whereas
-<tt>iopause_select</tt> defaults to select(), which incurs some CPU overhead for the
-API conversion, but has a 1 microsecond precision.
+but its maximum precision is 1 millisecond, which might not be enough for some applications;
+using <tt>select()</tt> instead incurs some CPU overhead for the API conversion, but has a
+1 microsecond precision.
+<a href="http://man7.org/linux/man-pages/man2/poll.2.html">ppoll()</a> gets the best of
+both worlds with the same interface model as <tt>poll()</tt> and a 1 nanosecond precision,
+which is why skalibs always uses it when available.
 </p>
 
 </body>
diff --git a/doc/libstddjb/ip46.html b/doc/libstddjb/ip46.html
index 8d13640..e0e95b3 100644
--- a/doc/libstddjb/ip46.html
+++ b/doc/libstddjb/ip46.html
@@ -74,21 +74,21 @@ except if IPv6 is unavailable, in which case it returns 0 ENOSYS.
 </p>
 
 <p>
-<code> unsigned int ip46_fmt (char *s, ip46_t const *a) </code> <br />
+<code> size_t ip46_fmt (char *s, ip46_t const *a) </code> <br />
 Formats the address in *<em>a</em> into the string <em>s</em>, which
 must be preallocated. Returns the number of bytes written. The address
 will be accordingly formatted as IPv4 or IPv6.
 </p>
 
 <p>
-<code> unsigned int ip46_scan (char const *s, ip46_t *a) </code> <br />
+<code> size_t ip46_scan (char const *s, ip46_t *a) </code> <br />
 Scans the string <em>s</em> for an IPv4 or IPv6 address. If it finds
 one, writes it into *<em>a</em> and returns the number of bytes read.
 If it cannot, returns 0.
 </p>
 
 <p>
-<code> unsigned int ip46_scanlist (ip46_t *list, unsigned int max, char const *s, unsigned int *n) </code> <br />
+<code> size_t ip46_scanlist (ip46_t *list, size_t max, char const *s, size_t *n) </code> <br />
 Scans the string <em>s</em> for a list of comma-, semicolon-, space-, tab- or
 newline-separated IPv4 or IPv6 addresses, up to a maximum of <em>max</em>. It
 stores them into the (preallocated) ip46_t array pointed to by <em>list</em>.
@@ -97,24 +97,24 @@ IP list at all), and stores the number of found and scanned addresses into *<em>
 </p>
 
 <p>
-<code> int socket_connect46 (int fd, ip46_t *a, uint16 port) </code> <br />
+<code> int socket_connect46 (int fd, ip46_t *a, uint16_t port) </code> <br />
 Connects the socket <em>fd</em> to address *<em>a</em> and port <em>port</em>.
 Returns 0 in case of success, and -1 (and sets errno) in case of failure.
 </p>
 
 <p>
-<code> int socket_bind46 (int fd, ip46_t *a, uint16 port) </code> <br />
+<code> int socket_bind46 (int fd, ip46_t *a, uint16_t port) </code> <br />
 Binds the socket <em>fd</em> to address *<em>a</em> and port <em>port</em>.
 Returns 0 in case of success, and -1 (and sets errno) in case of failure.
 </p>
 
 <p>
-<code> int socket_bind46_reuse (int fd, ip46_t *a, uint16 port) </code> <br />
+<code> int socket_bind46_reuse (int fd, ip46_t *a, uint16_t port) </code> <br />
 Same as the previous function, with the SO_REUSEADDR option.
 </p>
 
 <p>
-<code> int socket_deadlineconnstamp46 (int fd, ip46_t const *a, uint16 port, tain_t const *deadline, tain_t *stamp) </code> <br />
+<code> int socket_deadlineconnstamp46 (int fd, ip46_t const *a, uint16_t port, tain_t const *deadline, tain_t *stamp) </code> <br />
 Attempts to synchronously connect the socket <em>fd</em> to address a<em>a</em>
 and port <em>port</em>. Returns 1 if it succeeds and 0 (and sets errno)
 if it fails. <em>stamp</em> must contain an accurate enough
@@ -124,35 +124,35 @@ returns 0 ETIMEDOUT.
 </p>
 
 <p>
-<code> int socket_recv46 (int fd, char *s, unsigned int len, ip46_t *a, uint16 *port) </code> <br />
+<code> ssize_t socket_recv46 (int fd, char *s, size_t len, ip46_t *a, uint16_t *port) </code> <br />
 Reads a datagram from socket <em>fd</em>. The message is stored into buffer <em>s</em>
 of max length <em>len</em>, and stores the sender information into address *<em>a</em>
 and port *<em>port</em>. Returns the length of the read datagram, or -1 if it fails.
 </p>
 
 <p>
-<code> int socket_send46 (int fd, char const *s, unsigned int len, ip46_t const *a, uint16 port) </code> <br />
+<code> ssize_t socket_send46 (int fd, char const *s, size_t len, ip46_t const *a, uint16_t port) </code> <br />
 Writes a datagram to socket <em>fd</em>. The message is read from buffer <em>s</em>
 of length <em>len</em>, and the recipient information is address *<em>a</em>
 and port <em>port</em>. Returns the number of written bytes, or -1 if it fails.
 </p>
 
 <p>
-<code> int socket_local46 (int fd, ip46_t *a, uint16 *port) </code> <br />
+<code> int socket_local46 (int fd, ip46_t *a, uint16_t *port) </code> <br />
 Gets the local information about bound socket <em>fd</em>: the local IP
 address is stored into *<em>a</em> and the local port into *<em>port</em>.
 Returns 0 in case of success, and -1 (and sets errno) in case of failure.
 </p>
 
 <p>
-<code> int socket_remote46 (int fd, ip46_t *a, uint16 *port) </code> <br />
+<code> int socket_remote46 (int fd, ip46_t *a, uint16_t *port) </code> <br />
 Gets the peer information about connected socket <em>fd</em>: the remote IP
 address is stored into *<em>a</em> and the remote port into *<em>port</em>.
 Returns 0 in case of success, and -1 (and sets errno) in case of failure.
 </p>
 
 <p>
-<code> int socket_recvnb46 (int fd, char *s, unsigned int len, ip46_t *a, uint16 *port,
+<code> ssize_t socket_recvnb46 (int fd, char *s, size_t len, ip46_t *a, uint16_t *port,
 tain_t const *deadline, tain_t *stamp) </code> <br />
 Like <tt>socket_recv46</tt>, except that the function blocks until a datagram
 is received. *<em>stamp</em> must be an accurate enough approximation of the
@@ -161,7 +161,7 @@ arrived by absolute date *<em>deadline</em>, the function returns -1 ETIMEOUT.
 </p>
 
 <p>
-<code> int socket_sendnb46 (int fd, char const *s, unsigned int len, ip46_t const *a, uint16 port,
+<code> ssize_t socket_sendnb46 (int fd, char const *s, size_t len, ip46_t const *a, uint16_t port,
 tain_t const *deadline, tain_t *stamp) </code> <br />
 Like <tt>socket_send46</tt>, except that the function blocks until a datagram
 has been effectively sent. *<em>stamp</em> must be an accurate enough approximation of the
diff --git a/doc/libstddjb/lolstdio.html b/doc/libstddjb/lolstdio.html
index 2ec923b..8971137 100644
--- a/doc/libstddjb/lolstdio.html
+++ b/doc/libstddjb/lolstdio.html
@@ -38,8 +38,8 @@ formatting but interacting with <a href="buffer.html">buffers</a> or
  Like any printf-style functions, the lolstdio functions are rather
 complex and inefficient, and not recommended for general use; they are
 provided as a quick and dirty way to debug or test things. Programmers
-are advised to use the <a href="fmtscan.html">type-specific formatting
-functions</a> instead in production-quality code.
+are advised to use type-specific formatting functions instead in
+production-quality code.
 </p>
 
 <p>
diff --git a/doc/libstddjb/siovec.html b/doc/libstddjb/siovec.html
new file mode 100644
index 0000000..c308d9a
--- /dev/null
+++ b/doc/libstddjb/siovec.html
@@ -0,0 +1,28 @@
+<html>
+  <head>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
+    <meta http-equiv="Content-Language" content="en" />
+    <title>skalibs: the siovec header</title>
+    <meta name="Description" content="skalibs: the siovec header" />
+    <meta name="Keywords" content="skalibs header siovec struct iovec scatter gather array I/O" />
+    <!-- <link rel="stylesheet" type="text/css" href="http://skarnet.org/default.css" /> -->
+  </head>
+<body>
+
+<p>
+<a href="index.html">libstddjb</a><br />
+<a href="../libskarnet.html">libskarnet</a><br />
+<a href="../index.html">skalibs</a><br />
+<a href="http://skarnet.org/software/">Software</a><br />
+<a href="http://skarnet.org/">skarnet.org</a>
+</p>
+
+<h1> The <tt>skalibs/siovec.h</tt> header </h1>
+
+<p>
+ TODO: write this documentation page. (Sorry!)
+</p>
+
+</body>
+</html>
diff --git a/doc/libstddjb/stralloc.html b/doc/libstddjb/stralloc.html
index 75e3d45..0147466 100644
--- a/doc/libstddjb/stralloc.html
+++ b/doc/libstddjb/stralloc.html
@@ -93,7 +93,7 @@ A stralloc should be initialized to STRALLOC_ZERO before its first use.
 <h2> Functions </h2>
 
 <p>
-<code> int stralloc_catb (stralloc *sa, char const *s, unsigned int len) </code> <br />
+<code> int stralloc_catb (stralloc *sa, char const *s, size_t len) </code> <br />
 Appends the <em>len</em> bytes pointed to by <em>s</em> to the end of the
 memory zone handled by *<em>sa</em>, automatically allocating more memory
 if needed. Returns 1 if it succeeds, and 0 if it fails.