cleanup src/linux and src/misc trees, etc.

previously, it was pretty much random which one of these trees a given
function appeared in. they have now been organized into:

src/linux: non-POSIX linux syscalls (possibly shard with other nixen)
src/legacy: various obsolete/legacy functions, mostly wrappers
src/misc: still mostly uncategorized; some misc POSIX, some nonstd
src/crypt: crypt hash functions

further cleanup will be done later.

45 files changed, 74 insertions, 98 deletions

diff --git a/src/misc/crypt.c b/src/crypt/crypt.c
index f1e310f6..f1e310f6 100644
--- a/src/misc/crypt.c
+++ b/src/crypt/crypt.c
diff --git a/src/misc/crypt_blowfish.c b/src/crypt/crypt_blowfish.c
index bd37be84..bd37be84 100644
--- a/src/misc/crypt_blowfish.c
+++ b/src/crypt/crypt_blowfish.c
diff --git a/src/misc/crypt_des.c b/src/crypt/crypt_des.c
index d7b2b15a..d7b2b15a 100644
--- a/src/misc/crypt_des.c
+++ b/src/crypt/crypt_des.c
diff --git a/src/misc/crypt_r.c b/src/crypt/crypt_r.c
index 1c7f9cf0..1c7f9cf0 100644
--- a/src/misc/crypt_r.c
+++ b/src/crypt/crypt_r.c
diff --git a/src/misc/crypt_sha256.c b/src/crypt/crypt_sha256.c
index 2dc27ee7..2dc27ee7 100644
--- a/src/misc/crypt_sha256.c
+++ b/src/crypt/crypt_sha256.c
diff --git a/src/misc/crypt_sha512.c b/src/crypt/crypt_sha512.c
index 2c0de698..2c0de698 100644
--- a/src/misc/crypt_sha512.c
+++ b/src/crypt/crypt_sha512.c
diff --git a/src/misc/cuserid.c b/src/legacy/cuserid.c
index 4e78798d..4e78798d 100644
--- a/src/misc/cuserid.c
+++ b/src/legacy/cuserid.c
diff --git a/src/linux/daemon.c b/src/legacy/daemon.c
index 1568b1dc..1568b1dc 100644
--- a/src/linux/daemon.c
+++ b/src/legacy/daemon.c
diff --git a/src/linux/err.c b/src/legacy/err.c
index 0f748538..0f748538 100644
--- a/src/linux/err.c
+++ b/src/legacy/err.c
diff --git a/src/misc/ftw.c b/src/legacy/ftw.c
index 0429aba4..0429aba4 100644
--- a/src/misc/ftw.c
+++ b/src/legacy/ftw.c
diff --git a/src/misc/futimes.c b/src/legacy/futimes.c
index f8fd1cde..f8fd1cde 100644
--- a/src/misc/futimes.c
+++ b/src/legacy/futimes.c
diff --git a/src/linux/getdtablesize.c b/src/legacy/getdtablesize.c
index 623a6af3..623a6af3 100644
--- a/src/linux/getdtablesize.c
+++ b/src/legacy/getdtablesize.c
diff --git a/src/linux/getpagesize.c b/src/legacy/getpagesize.c
index 5ede652b..5ede652b 100644
--- a/src/linux/getpagesize.c
+++ b/src/legacy/getpagesize.c
diff --git a/src/linux/getpass.c b/src/legacy/getpass.c
index d439a2a5..d439a2a5 100644
--- a/src/linux/getpass.c
+++ b/src/legacy/getpass.c
diff --git a/src/misc/getusershell.c b/src/legacy/getusershell.c
index 683158c8..683158c8 100644
--- a/src/misc/getusershell.c
+++ b/src/legacy/getusershell.c
diff --git a/src/misc/isastream.c b/src/legacy/isastream.c
index 4dafdb08..4dafdb08 100644
--- a/src/misc/isastream.c
+++ b/src/legacy/isastream.c
diff --git a/src/misc/lutimes.c b/src/legacy/lutimes.c
index 13dfe4ef..13dfe4ef 100644
--- a/src/misc/lutimes.c
+++ b/src/legacy/lutimes.c
diff --git a/src/misc/ulimit.c b/src/legacy/ulimit.c
index 1f59e8e6..1f59e8e6 100644
--- a/src/misc/ulimit.c
+++ b/src/legacy/ulimit.c
diff --git a/src/stub/utmpx.c b/src/legacy/utmpx.c
index c483e4ed..c483e4ed 100644
--- a/src/stub/utmpx.c
+++ b/src/legacy/utmpx.c
diff --git a/src/linux/epoll.c b/src/linux/epoll.c
new file mode 100644
index 00000000..35f70ed1
--- /dev/null
+++ b/src/linux/epoll.c
@@ -0,0 +1,27 @@
+#include <sys/epoll.h>
+#include "syscall.h"
+
+int epoll_create(int size)
+{
+	return syscall(SYS_epoll_create, size);
+}
+
+int epoll_create1(int flags)
+{
+	return syscall(SYS_epoll_create1, flags);
+}
+
+int epoll_ctl(int fd, int op, int fd2, struct epoll_event *ev)
+{
+	return syscall(SYS_epoll_ctl, fd, op, fd2, ev);
+}
+
+int epoll_pwait(int fd, struct epoll_event *ev, int cnt, int to, const sigset_t *sigs)
+{
+	return syscall(SYS_epoll_pwait, fd, ev, cnt, to, sigs, __SYSCALL_SSLEN);
+}
+
+int epoll_wait(int fd, struct epoll_event *ev, int cnt, int to)
+{
+	return syscall(SYS_epoll_wait, fd, ev, cnt, to);
+}
diff --git a/src/linux/epoll_create.c b/src/linux/epoll_create.c
deleted file mode 100644
index 29d82999..00000000
--- a/src/linux/epoll_create.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <sys/epoll.h>
-#include "syscall.h"
-
-int epoll_create(int size)
-{
-	return syscall(SYS_epoll_create, size);
-}
diff --git a/src/linux/epoll_create1.c b/src/linux/epoll_create1.c
deleted file mode 100644
index 380b5dad..00000000
--- a/src/linux/epoll_create1.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <sys/epoll.h>
-#include "syscall.h"
-
-int epoll_create1(int flags)
-{
-	return syscall(SYS_epoll_create1, flags);
-}
diff --git a/src/linux/epoll_ctl.c b/src/linux/epoll_ctl.c
deleted file mode 100644
index da3e999b..00000000
--- a/src/linux/epoll_ctl.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <sys/epoll.h>
-#include "syscall.h"
-
-int epoll_ctl(int fd, int op, int fd2, struct epoll_event *ev)
-{
-	return syscall(SYS_epoll_ctl, fd, op, fd2, ev);
-}
diff --git a/src/linux/epoll_pwait.c b/src/linux/epoll_pwait.c
deleted file mode 100644
index 3ecdbb59..00000000
--- a/src/linux/epoll_pwait.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <sys/epoll.h>
-#include "syscall.h"
-
-int epoll_pwait(int fd, struct epoll_event *ev, int cnt, int to, const sigset_t *sigs)
-{
-	return syscall(SYS_epoll_pwait, fd, ev, cnt, to, sigs, __SYSCALL_SSLEN);
-}
diff --git a/src/linux/epoll_wait.c b/src/linux/epoll_wait.c
deleted file mode 100644
index 9d3924e0..00000000
--- a/src/linux/epoll_wait.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <sys/epoll.h>
-#include "syscall.h"
-
-int epoll_wait(int fd, struct epoll_event *ev, int cnt, int to)
-{
-	return syscall(SYS_epoll_wait, fd, ev, cnt, to);
-}
diff --git a/src/linux/eventfd.c b/src/linux/eventfd.c
index cb39a7ba..53066487 100644
--- a/src/linux/eventfd.c
+++ b/src/linux/eventfd.c
@@ -1,7 +1,18 @@
 #include <sys/eventfd.h>
+#include <unistd.h>
 #include "syscall.h"
 
 int eventfd(unsigned int count, int flags)
 {
 	return syscall(flags ? SYS_eventfd2 : SYS_eventfd, count, flags);
 }
+
+int eventfd_read(int fd, eventfd_t *value)
+{
+	return (sizeof(*value) == read(fd, value, sizeof(*value))) ? 0 : -1;
+}
+
+int eventfd_write(int fd, eventfd_t value)
+{
+	return (sizeof(value) == write(fd, &value, sizeof(value))) ? 0 : -1;
+}
diff --git a/src/linux/eventfd_read.c b/src/linux/eventfd_read.c
deleted file mode 100644
index 969e6615..00000000
--- a/src/linux/eventfd_read.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <sys/eventfd.h>
-#include <unistd.h>
-
-int eventfd_read(int fd, eventfd_t *value)
-{
-	return (sizeof(*value) == read(fd, value, sizeof(*value))) ? 0 : -1;
-}
diff --git a/src/linux/eventfd_write.c b/src/linux/eventfd_write.c
deleted file mode 100644
index 734fa367..00000000
--- a/src/linux/eventfd_write.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <sys/eventfd.h>
-#include <unistd.h>
-
-int eventfd_write(int fd, eventfd_t value)
-{
-	return (sizeof(value) == write(fd, &value, sizeof(value))) ? 0 : -1;
-}
diff --git a/src/linux/inotify.c b/src/linux/inotify.c
new file mode 100644
index 00000000..d3b4fa0b
--- /dev/null
+++ b/src/linux/inotify.c
@@ -0,0 +1,21 @@
+#include <sys/inotify.h>
+#include "syscall.h"
+
+int inotify_init()
+{
+	return syscall(SYS_inotify_init);
+}
+int inotify_init1(int flags)
+{
+	return syscall(SYS_inotify_init1, flags);
+}
+
+int inotify_add_watch(int fd, const char *pathname, uint32_t mask)
+{
+	return syscall(SYS_inotify_add_watch, fd, pathname, mask);
+}
+
+int inotify_rm_watch(int fd, uint32_t wd)
+{
+	return syscall(SYS_inotify_rm_watch, fd, wd);
+}
diff --git a/src/linux/inotify_add_watch.c b/src/linux/inotify_add_watch.c
deleted file mode 100644
index 75f207d7..00000000
--- a/src/linux/inotify_add_watch.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <sys/inotify.h>
-#include "syscall.h"
-
-int inotify_add_watch(int fd, const char *pathname, uint32_t mask)
-{
-	return syscall(SYS_inotify_add_watch, fd, pathname, mask);
-}
diff --git a/src/linux/inotify_init.c b/src/linux/inotify_init.c
deleted file mode 100644
index 05070846..00000000
--- a/src/linux/inotify_init.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <sys/inotify.h>
-#include "syscall.h"
-
-int inotify_init()
-{
-	return syscall(SYS_inotify_init);
-}
diff --git a/src/linux/inotify_init1.c b/src/linux/inotify_init1.c
deleted file mode 100644
index 6472a7b2..00000000
--- a/src/linux/inotify_init1.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <sys/inotify.h>
-#include "syscall.h"
-
-int inotify_init1(int flags)
-{
-	return syscall(SYS_inotify_init1, flags);
-}
diff --git a/src/linux/inotify_rm_watch.c b/src/linux/inotify_rm_watch.c
deleted file mode 100644
index cba597eb..00000000
--- a/src/linux/inotify_rm_watch.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <sys/inotify.h>
-#include "syscall.h"
-
-int inotify_rm_watch(int fd, uint32_t wd)
-{
-	return syscall(SYS_inotify_rm_watch, fd, wd);
-}
diff --git a/src/linux/mount.c b/src/linux/mount.c
index 83a8db44..34e11af1 100644
--- a/src/linux/mount.c
+++ b/src/linux/mount.c
@@ -5,3 +5,13 @@ int mount(const char *special, const char *dir, const char *fstype, unsigned lon
 {
 	return syscall(SYS_mount, special, dir, fstype, flags, data);
 }
+
+int umount(const char *special)
+{
+	return syscall(SYS_umount2, special, 0);
+}
+
+int umount2(const char *special, int flags)
+{
+	return syscall(SYS_umount2, special, flags);
+}
diff --git a/src/misc/prlimit.c b/src/linux/prlimit.c
index b9dbb446..b9dbb446 100644
--- a/src/misc/prlimit.c
+++ b/src/linux/prlimit.c
diff --git a/src/misc/ptrace.c b/src/linux/ptrace.c
index 83b8022b..83b8022b 100644
--- a/src/misc/ptrace.c
+++ b/src/linux/ptrace.c
diff --git a/src/linux/swapon.c b/src/linux/swap.c
index 2b40a30b..8137d51e 100644
--- a/src/linux/swapon.c
+++ b/src/linux/swap.c
@@ -5,3 +5,8 @@ int swapon(const char *path, int flags)
 {
 	return syscall(SYS_swapon, path, flags);
 }
+
+int swapoff(const char *path)
+{
+	return syscall(SYS_swapoff, path);
+}
diff --git a/src/linux/swapoff.c b/src/linux/swapoff.c
deleted file mode 100644
index 9f95e82d..00000000
--- a/src/linux/swapoff.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <sys/swap.h>
-#include "syscall.h"
-
-int swapoff(const char *path)
-{
-	return syscall(SYS_swapoff, path);
-}
diff --git a/src/linux/umount.c b/src/linux/umount.c
deleted file mode 100644
index fb9b5e73..00000000
--- a/src/linux/umount.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <sys/mount.h>
-#include "syscall.h"
-
-int umount(const char *special)
-{
-	return syscall(SYS_umount2, special, 0);
-}
diff --git a/src/linux/umount2.c b/src/linux/umount2.c
deleted file mode 100644
index 25ad057c..00000000
--- a/src/linux/umount2.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <sys/mount.h>
-#include "syscall.h"
-
-int umount2(const char *special, int flags)
-{
-	return syscall(SYS_umount2, special, flags);
-}
diff --git a/src/linux/gethostid.c b/src/misc/gethostid.c
index ea65611a..ea65611a 100644
--- a/src/linux/gethostid.c
+++ b/src/misc/gethostid.c
diff --git a/src/linux/getopt_long.c b/src/misc/getopt_long.c
index 6d3a4a6e..6d3a4a6e 100644
--- a/src/linux/getopt_long.c
+++ b/src/misc/getopt_long.c
diff --git a/src/linux/initgroups.c b/src/misc/initgroups.c
index 545d1859..545d1859 100644
--- a/src/linux/initgroups.c
+++ b/src/misc/initgroups.c
diff --git a/src/linux/mntent.c b/src/misc/mntent.c
index 3eafba5e..3eafba5e 100644
--- a/src/linux/mntent.c
+++ b/src/misc/mntent.c
diff --git a/src/linux/syscall.c b/src/misc/syscall.c
index 15355609..15355609 100644
--- a/src/linux/syscall.c
+++ b/src/misc/syscall.c