Add support for personality(), prctl(), ustat(), and ulimit()

syscalls, which had managed to stay unimplemented thus far.
 -Erik

include/sys/personality.h

@@ -0,0 +1,73 @@
+/* Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+/* Taken verbatim from Linux 2.4 (include/linux/personality.h).  */
+
+#ifndef _SYS_PERSONALITY_H
+#define _SYS_PERSONALITY_H 1
+
+#include <features.h>
+
+/* Flags for bug emulation.
+   These occupy the top three bytes.  */
+enum
+  {
+    MMAP_PAGE_ZERO = 0x0100000,
+    ADDR_LIMIT_32BIT = 0x0800000,
+    SHORT_INODE = 0x1000000,
+    WHOLE_SECONDS = 0x2000000,
+    STICKY_TIMEOUTS = 0x4000000,
+  };
+
+/* Personality types.
+
+   These go in the low byte.  Avoid using the top bit, it will
+   conflict with error returns.  */
+enum 
+  {
+    PER_LINUX = 0x0000,
+    PER_LINUX_32BIT = 0x0000 | ADDR_LIMIT_32BIT,
+    PER_SVR4 = 0x0001 | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
+    PER_SVR3 = 0x0002 | STICKY_TIMEOUTS | SHORT_INODE,
+    PER_SCOSVR3 = 0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS | SHORT_INODE,
+    PER_OSR5 = 0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS,
+    PER_WYSEV386 = 0x0004 | STICKY_TIMEOUTS | SHORT_INODE,
+    PER_ISCR4 = 0x0005 | STICKY_TIMEOUTS,
+    PER_BSD = 0x0006,
+    PER_SUNOS = 0x0006 | STICKY_TIMEOUTS,
+    PER_XENIX = 0x0007 | STICKY_TIMEOUTS | SHORT_INODE,
+    PER_LINUX32 = 0x0008,
+    PER_IRIX32 = 0x0009 | STICKY_TIMEOUTS,	/* IRIX5 32-bit */
+    PER_IRIXN32 = 0x000a | STICKY_TIMEOUTS,	/* IRIX6 new 32-bit */
+    PER_IRIX64 = 0x000b | STICKY_TIMEOUTS,	/* IRIX6 64-bit */
+    PER_RISCOS = 0x000c,
+    PER_SOLARIS = 0x000d | STICKY_TIMEOUTS,
+    PER_UW7 = 0x000e | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
+    PER_HPUX = 0x000f,
+    PER_OSF4 = 0x0010,
+    PER_MASK = 0x00ff,
+  };
+
+__BEGIN_DECLS
+
+/* Set different ABIs (personalities).  */
+extern int personality (unsigned long int __persona) __THROW;
+
+__END_DECLS
+
+#endif /* sys/personality.h */

include/sys/prctl.h

@@ -0,0 +1,32 @@
+/* Copyright (C) 1997, 1999 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _SYS_PRCTL_H
+#define _SYS_PRCTL_H	1
+
+#include <features.h>
+#include <linux/prctl.h>  /*  The magic values come from here  */
+
+__BEGIN_DECLS
+
+/* Control process execution.  */
+extern int prctl (int __option, ...) __THROW;
+
+__END_DECLS
+
+#endif  /* sys/prctl.h */

include/sys/resource.h

@@ -1,4 +1,4 @@
-/* Copyright (C) 1992, 94, 96, 97, 98, 99, 2000 Free Software Foundation, Inc.
+/* Copyright (C) 1992,94,96,97,98,99,2000,2002 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -35,7 +35,7 @@ __BEGIN_DECLS
    `int' as the type for the first argument.  When we are compiling with
    GNU extensions we change this slightly to provide better error
    checking.  */
-#ifdef __USE_GNU
+#if defined __USE_GNU && !defined __cplusplus
 typedef enum __rlimit_resource __rlimit_resource_t;
 typedef enum __rusage_who __rusage_who_t;
 typedef enum __priority_which __priority_which_t;

include/sys/ustat.h

@@ -0,0 +1,38 @@
+/* Header describing obsolete `ustat' interface.
+   Copyright (C) 1996, 1998, 1999 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+/*
+ * This interface is obsolete.  Use <sys/statfs.h> instead.
+ */
+
+#ifndef _SYS_USTAT_H
+#define	_SYS_USTAT_H	1
+
+#include <features.h>
+
+#include <sys/types.h>
+#include <bits/ustat.h>
+
+__BEGIN_DECLS
+
+extern int ustat (__dev_t __dev, struct ustat *__ubuf) __THROW;
+
+__END_DECLS
+
+#endif /* sys/ustat.h */

include/ulimit.h

@@ -0,0 +1,48 @@
+/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _ULIMIT_H
+#define _ULIMIT_H	1
+
+#include <features.h>
+
+/* Constants used as the first parameter for `ulimit'.  They denote limits
+   which can be set or retrieved using this function.  */
+enum
+{
+  UL_GETFSIZE = 1,			/* Return limit on the size of a file,
+					   in units of 512 bytes.  */
+#define UL_GETFSIZE	UL_GETFSIZE
+  UL_SETFSIZE,				/* Set limit on the size of a file to
+					   second argument.  */
+#define UL_SETFSIZE	UL_SETFSIZE
+  __UL_GETMAXBRK,			/* Return the maximum possible address
+					   of the data segment.  */
+  __UL_GETOPENMAX			/* Return the maximum number of files
+					   that the calling process can open.*/
+};
+
+
+__BEGIN_DECLS
+
+/* Control process limits according to CMD.  */
+extern long int ulimit (int __cmd, ...) __THROW;
+
+__END_DECLS
+
+#endif /* ulimit.h */

include/ustat.h

@@ -0,0 +1 @@
+#include <sys/ustat.h>

libc/sysdeps/linux/common/Makefile

@@ -25,7 +25,8 @@ CSRC=	waitpid.c getdnnm.c gethstnm.c getcwd.c ptrace.c \
 	cmsg_nxthdr.c longjmp.c open64.c ftruncate64.c mmap64.c \
 	truncate64.c getrlimit64.c setrlimit64.c creat64.c \
 	llseek.c pread_write.c _exit.c sync.c getdirname.c \
-	sendfile64.c xstatconv.c getdents.c getdents64.c vfork.c
+	sendfile64.c xstatconv.c getdents.c getdents64.c vfork.c \
+	ulimit.c
 ifneq ($(strip $(EXCLUDE_BRK)),y)
 CSRC+=sbrk.c
 endif

libc/sysdeps/linux/common/bits/ustat.h

@@ -1,4 +1,4 @@
-/* Copyright (C) 1997 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 2002 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -16,12 +16,16 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
+#ifndef _SYS_USTAT_H
+# error "Never include <bits/ustat.h> directly; use <sys/ustat.h> instead."
+#endif
+
 #include <sys/types.h>
 
 struct ustat
   {
-    __daddr_t f_tfree;
-    __ino_t f_tinode;
+    __daddr_t f_tfree;		/* Number of free blocks.  */
+    __ino_t f_tinode;		/* Number of free inodes.  */
     char f_fname[6];
     char f_fpack[6];
   };

libc/sysdeps/linux/common/syscalls.c

@@ -2,8 +2,7 @@
 /*
  * Syscalls for uClibc
  *
- * Copyright (C) 2000 by Lineo, inc
- * Copyright (C) 2001, 2002 by Erik Andersen
+ * Copyright (C) 2001-2003 by Erik Andersen
  * Written by Erik Andersen <andersen@codpoet.org>
  *
  * This program is free software; you can redistribute it and/or modify it
@@ -630,6 +629,7 @@ int setpgid(pid_t pid, pid_t pgid)
 #endif
 
 //#define __NR_ulimit           58
+//See ulimit.c
 
 //#define __NR_oldolduname      59
 
@@ -652,6 +652,20 @@ _syscall1(int, chroot, const char *, path);
 #endif
 
 //#define __NR_ustat            62
+#ifdef L___syscall_ustat
+#define __NR___syscall_ustat __NR_ustat
+#include <sys/stat.h>
+static inline
+_syscall2(int, __syscall_ustat, unsigned short int, kdev_t, struct ustat *, ubuf);
+int ustat(dev_t dev, struct ustat *ubuf)
+{ 
+	__kernel_dev_t k_dev;
+	/* We must convert the dev_t value to a __kernel_dev_t */
+	k_dev = ((major(dev) & 0xff) << 8) | (minor(dev) & 0xff);
+	return __syscall_ustat(k_dev, ubuf);
+}
+#endif
+
 
 //#define __NR_dup2             63
 #ifdef L_dup2
@@ -1345,6 +1359,12 @@ _syscall2(int, bdflush, int, __func, long int, __data);
 //#define __NR_sysfs            135
 
 //#define __NR_personality      136
+#ifdef __NR_personality
+#ifdef L_personality
+#include <sys/personality.h>
+_syscall1(int, personality, unsigned long int, __persona);
+#endif
+#endif
 
 //#define __NR_afs_syscall      137
 
@@ -1703,6 +1723,13 @@ int getresgid(gid_t *rgid, gid_t *egid, gid_t *sgid)
 #endif
 
 //#define __NR_prctl                    172
+#ifdef __NR_prctl
+#ifdef L_prctl
+#include <stdarg.h>
+//#include <sys/prctl.h>
+_syscall5(int, prctl, int, a, int, b, int, c, int, d, int, e);
+#endif
+#endif
 
 //#define __NR_rt_sigreturn             173
 //#define __NR_rt_sigaction             174