Add generic sys_olduname()
Add generic implementations of the old and really old uname system calls. Note that sh only implements sys_olduname but not sys_oldolduname, but I'm not going to bother with another ifdef for that special case. m32r implemented an old uname but never wired it up, so kill it, too. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Jeff Dike <jdike@addtoit.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: James Morris <jmorris@namei.org> Cc: Andreas Schwab <schwab@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
parent
e28cbf2293
commit
5cacdb4add
19 changed files with 66 additions and 284 deletions
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@ -76,17 +76,6 @@ asmlinkage int sys_tas(int __user *addr)
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return oldval;
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}
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asmlinkage int sys_uname(struct old_utsname __user * name)
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{
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int err;
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if (!name)
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return -EFAULT;
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down_read(&uts_sem);
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err = copy_to_user(name, utsname(), sizeof (*name));
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up_read(&uts_sem);
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return err?-EFAULT:0;
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}
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asmlinkage int sys_cacheflush(void *addr, int bytes, int cache)
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{
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/* This should flush more selectively ... */
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@ -1014,6 +1014,7 @@
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#define __ARCH_WANT_SYS_LLSEEK
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#define __ARCH_WANT_SYS_NICE
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#define __ARCH_WANT_SYS_OLD_GETRLIMIT
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#define __ARCH_WANT_SYS_OLD_UNAME
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#define __ARCH_WANT_SYS_OLDUMOUNT
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#define __ARCH_WANT_SYS_SIGPENDING
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#define __ARCH_WANT_SYS_SIGPROCMASK
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@ -215,48 +215,6 @@ asmlinkage int sys_execve(nabi_no_regargs struct pt_regs regs)
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return error;
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}
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/*
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* Compacrapability ...
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*/
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SYSCALL_DEFINE1(uname, struct old_utsname __user *, name)
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{
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if (name && !copy_to_user(name, utsname(), sizeof (*name)))
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return 0;
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return -EFAULT;
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}
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/*
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* Compacrapability ...
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*/
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SYSCALL_DEFINE1(olduname, struct oldold_utsname __user *, name)
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{
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int error;
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if (!name)
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return -EFAULT;
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if (!access_ok(VERIFY_WRITE, name, sizeof(struct oldold_utsname)))
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return -EFAULT;
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error = __copy_to_user(&name->sysname, &utsname()->sysname,
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__OLD_UTS_LEN);
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error -= __put_user(0, name->sysname + __OLD_UTS_LEN);
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error -= __copy_to_user(&name->nodename, &utsname()->nodename,
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__OLD_UTS_LEN);
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error -= __put_user(0, name->nodename + __OLD_UTS_LEN);
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error -= __copy_to_user(&name->release, &utsname()->release,
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__OLD_UTS_LEN);
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error -= __put_user(0, name->release + __OLD_UTS_LEN);
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error -= __copy_to_user(&name->version, &utsname()->version,
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__OLD_UTS_LEN);
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error -= __put_user(0, name->version + __OLD_UTS_LEN);
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error -= __copy_to_user(&name->machine, &utsname()->machine,
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__OLD_UTS_LEN);
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error = __put_user(0, name->machine + __OLD_UTS_LEN);
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error = error ? -EFAULT : 0;
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return error;
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}
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SYSCALL_DEFINE1(set_thread_area, unsigned long, addr)
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{
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struct thread_info *ti = task_thread_info(current);
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@ -377,6 +377,7 @@
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#define __ARCH_WANT_SYS_LLSEEK
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#define __ARCH_WANT_SYS_NICE
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#define __ARCH_WANT_SYS_OLD_GETRLIMIT
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#define __ARCH_WANT_SYS_OLD_UNAME
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#define __ARCH_WANT_SYS_OLDUMOUNT
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#define __ARCH_WANT_SYS_SIGPENDING
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#define __ARCH_WANT_SYS_SIGPROCMASK
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@ -116,63 +116,6 @@ long ppc64_personality(unsigned long personality)
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}
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#endif
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#ifdef CONFIG_PPC64
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#define OVERRIDE_MACHINE (personality(current->personality) == PER_LINUX32)
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#else
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#define OVERRIDE_MACHINE 0
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#endif
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static inline int override_machine(char __user *mach)
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{
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if (OVERRIDE_MACHINE) {
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/* change ppc64 to ppc */
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if (__put_user(0, mach+3) || __put_user(0, mach+4))
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return -EFAULT;
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}
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return 0;
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}
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int sys_uname(struct old_utsname __user *name)
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{
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int err = 0;
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down_read(&uts_sem);
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if (copy_to_user(name, utsname(), sizeof(*name)))
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err = -EFAULT;
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up_read(&uts_sem);
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if (!err)
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err = override_machine(name->machine);
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return err;
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}
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int sys_olduname(struct oldold_utsname __user *name)
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{
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int error;
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if (!access_ok(VERIFY_WRITE, name, sizeof(struct oldold_utsname)))
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return -EFAULT;
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down_read(&uts_sem);
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error = __copy_to_user(&name->sysname, &utsname()->sysname,
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__OLD_UTS_LEN);
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error |= __put_user(0, name->sysname + __OLD_UTS_LEN);
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error |= __copy_to_user(&name->nodename, &utsname()->nodename,
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__OLD_UTS_LEN);
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error |= __put_user(0, name->nodename + __OLD_UTS_LEN);
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error |= __copy_to_user(&name->release, &utsname()->release,
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__OLD_UTS_LEN);
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error |= __put_user(0, name->release + __OLD_UTS_LEN);
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error |= __copy_to_user(&name->version, &utsname()->version,
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__OLD_UTS_LEN);
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error |= __put_user(0, name->version + __OLD_UTS_LEN);
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error |= __copy_to_user(&name->machine, &utsname()->machine,
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__OLD_UTS_LEN);
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error |= override_machine(name->machine);
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up_read(&uts_sem);
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return error? -EFAULT: 0;
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}
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long ppc_fadvise64_64(int fd, int advice, u32 offset_high, u32 offset_low,
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u32 len_high, u32 len_low)
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{
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@ -3,15 +3,12 @@
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#ifdef __KERNEL__
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struct old_utsname;
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asmlinkage int old_mmap(unsigned long addr, unsigned long len,
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unsigned long prot, unsigned long flags,
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int fd, unsigned long off);
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asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
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unsigned long prot, unsigned long flags,
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unsigned long fd, unsigned long pgoff);
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asmlinkage int sys_uname(struct old_utsname __user *name);
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#ifdef CONFIG_SUPERH32
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# include "syscalls_32.h"
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@ -371,6 +371,7 @@
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#define __ARCH_WANT_SYS_LLSEEK
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#define __ARCH_WANT_SYS_NICE
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#define __ARCH_WANT_SYS_OLD_GETRLIMIT
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#define __ARCH_WANT_SYS_OLD_UNAME
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#define __ARCH_WANT_SYS_OLDUMOUNT
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#define __ARCH_WANT_SYS_SIGPENDING
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#define __ARCH_WANT_SYS_SIGPROCMASK
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@ -411,6 +411,7 @@
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#define __ARCH_WANT_SYS_LLSEEK
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#define __ARCH_WANT_SYS_NICE
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#define __ARCH_WANT_SYS_OLD_GETRLIMIT
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#define __ARCH_WANT_SYS_OLD_UNAME
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#define __ARCH_WANT_SYS_OLDUMOUNT
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#define __ARCH_WANT_SYS_SIGPENDING
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#define __ARCH_WANT_SYS_SIGPROCMASK
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@ -93,14 +93,3 @@ asmlinkage int sys_cacheflush(unsigned long addr, unsigned long len, int op)
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up_read(¤t->mm->mmap_sem);
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return 0;
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}
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asmlinkage int sys_uname(struct old_utsname __user *name)
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{
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int err;
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if (!name)
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return -EFAULT;
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down_read(&uts_sem);
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err = copy_to_user(name, utsname(), sizeof(*name));
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up_read(&uts_sem);
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return err?-EFAULT:0;
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}
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@ -51,51 +51,6 @@ long old_mmap(unsigned long addr, unsigned long len,
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return err;
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}
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long sys_uname(struct old_utsname __user * name)
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{
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long err;
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if (!name)
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return -EFAULT;
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down_read(&uts_sem);
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err = copy_to_user(name, utsname(), sizeof (*name));
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up_read(&uts_sem);
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return err?-EFAULT:0;
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}
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long sys_olduname(struct oldold_utsname __user * name)
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{
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long error;
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if (!name)
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return -EFAULT;
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if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname)))
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return -EFAULT;
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down_read(&uts_sem);
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error = __copy_to_user(&name->sysname, &utsname()->sysname,
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__OLD_UTS_LEN);
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error |= __put_user(0, name->sysname + __OLD_UTS_LEN);
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error |= __copy_to_user(&name->nodename, &utsname()->nodename,
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__OLD_UTS_LEN);
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error |= __put_user(0, name->nodename + __OLD_UTS_LEN);
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error |= __copy_to_user(&name->release, &utsname()->release,
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__OLD_UTS_LEN);
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error |= __put_user(0, name->release + __OLD_UTS_LEN);
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error |= __copy_to_user(&name->version, &utsname()->version,
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__OLD_UTS_LEN);
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error |= __put_user(0, name->version + __OLD_UTS_LEN);
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error |= __copy_to_user(&name->machine, &utsname()->machine,
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__OLD_UTS_LEN);
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error |= __put_user(0, name->machine + __OLD_UTS_LEN);
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up_read(&uts_sem);
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error = error ? -EFAULT : 0;
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return error;
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}
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int kernel_execve(const char *filename, char *const argv[], char *const envp[])
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{
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mm_segment_t fs;
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@ -563,7 +563,7 @@ ia32_sys_call_table:
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.quad quiet_ni_syscall /* old mpx syscall holder */
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.quad sys_setpgid
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.quad quiet_ni_syscall /* old ulimit syscall holder */
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.quad sys32_olduname
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.quad sys_olduname
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.quad sys_umask /* 60 */
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.quad sys_chroot
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.quad compat_sys_ustat
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.quad compat_sys_newstat
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.quad compat_sys_newlstat
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.quad compat_sys_newfstat
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.quad sys32_uname
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.quad sys_uname
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.quad stub32_iopl /* 110 */
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.quad sys_vhangup
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.quad quiet_ni_syscall /* old "idle" system call */
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@ -448,58 +448,6 @@ asmlinkage long sys32_sendfile(int out_fd, int in_fd,
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return ret;
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}
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asmlinkage long sys32_olduname(struct oldold_utsname __user *name)
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{
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char *arch = "x86_64";
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int err;
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if (!name)
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return -EFAULT;
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if (!access_ok(VERIFY_WRITE, name, sizeof(struct oldold_utsname)))
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return -EFAULT;
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down_read(&uts_sem);
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err = __copy_to_user(&name->sysname, &utsname()->sysname,
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__OLD_UTS_LEN);
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err |= __put_user(0, name->sysname+__OLD_UTS_LEN);
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err |= __copy_to_user(&name->nodename, &utsname()->nodename,
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__OLD_UTS_LEN);
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err |= __put_user(0, name->nodename+__OLD_UTS_LEN);
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err |= __copy_to_user(&name->release, &utsname()->release,
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__OLD_UTS_LEN);
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err |= __put_user(0, name->release+__OLD_UTS_LEN);
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err |= __copy_to_user(&name->version, &utsname()->version,
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__OLD_UTS_LEN);
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err |= __put_user(0, name->version+__OLD_UTS_LEN);
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if (personality(current->personality) == PER_LINUX32)
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arch = "i686";
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err |= __copy_to_user(&name->machine, arch, strlen(arch) + 1);
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up_read(&uts_sem);
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err = err ? -EFAULT : 0;
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return err;
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}
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long sys32_uname(struct old_utsname __user *name)
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{
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int err;
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if (!name)
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return -EFAULT;
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down_read(&uts_sem);
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err = copy_to_user(name, utsname(), sizeof(*name));
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up_read(&uts_sem);
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if (personality(current->personality) == PER_LINUX32)
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err |= copy_to_user(&name->machine, "i686", 5);
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return err ? -EFAULT : 0;
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}
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asmlinkage long sys32_execve(char __user *name, compat_uptr_t __user *argv,
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compat_uptr_t __user *envp, struct pt_regs *regs)
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{
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@ -54,11 +54,6 @@ asmlinkage long sys32_pwrite(unsigned int, char __user *, u32, u32, u32);
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asmlinkage long sys32_personality(unsigned long);
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asmlinkage long sys32_sendfile(int, int, compat_off_t __user *, s32);
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struct oldold_utsname;
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struct old_utsname;
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asmlinkage long sys32_olduname(struct oldold_utsname __user *);
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long sys32_uname(struct old_utsname __user *);
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asmlinkage long sys32_execve(char __user *, compat_uptr_t __user *,
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compat_uptr_t __user *, struct pt_regs *);
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asmlinkage long sys32_clone(unsigned int, unsigned int, struct pt_regs *);
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@ -50,13 +50,6 @@ asmlinkage int sys_sigaction(int, const struct old_sigaction __user *,
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struct old_sigaction __user *);
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unsigned long sys_sigreturn(struct pt_regs *);
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/* kernel/sys_i386_32.c */
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struct oldold_utsname;
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struct old_utsname;
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asmlinkage int sys_uname(struct old_utsname __user *);
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asmlinkage int sys_olduname(struct oldold_utsname __user *);
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/* kernel/vm86_32.c */
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int sys_vm86old(struct vm86_struct __user *, struct pt_regs *);
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int sys_vm86(unsigned long, unsigned long, struct pt_regs *);
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#define __ARCH_WANT_SYS_LLSEEK
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#define __ARCH_WANT_SYS_NICE
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#define __ARCH_WANT_SYS_OLD_GETRLIMIT
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#define __ARCH_WANT_SYS_OLD_UNAME
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#define __ARCH_WANT_SYS_OLD_MMAP
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#define __ARCH_WANT_SYS_OLD_SELECT
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#define __ARCH_WANT_SYS_OLDUMOUNT
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@ -680,6 +680,7 @@ __SYSCALL(__NR_recvmmsg, sys_recvmmsg)
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#define __ARCH_WANT_SYS_LLSEEK
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#define __ARCH_WANT_SYS_NICE
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#define __ARCH_WANT_SYS_OLD_GETRLIMIT
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#define __ARCH_WANT_SYS_OLD_UNAME
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#define __ARCH_WANT_SYS_OLDUMOUNT
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#define __ARCH_WANT_SYS_SIGPENDING
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#define __ARCH_WANT_SYS_SIGPROCMASK
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@ -24,55 +24,6 @@
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#include <asm/syscalls.h>
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/*
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* Old cruft
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*/
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asmlinkage int sys_uname(struct old_utsname __user *name)
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{
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int err;
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if (!name)
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return -EFAULT;
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down_read(&uts_sem);
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err = copy_to_user(name, utsname(), sizeof(*name));
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up_read(&uts_sem);
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return err? -EFAULT:0;
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}
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asmlinkage int sys_olduname(struct oldold_utsname __user *name)
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{
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int error;
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if (!name)
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return -EFAULT;
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if (!access_ok(VERIFY_WRITE, name, sizeof(struct oldold_utsname)))
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return -EFAULT;
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down_read(&uts_sem);
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error = __copy_to_user(&name->sysname, &utsname()->sysname,
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__OLD_UTS_LEN);
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error |= __put_user(0, name->sysname + __OLD_UTS_LEN);
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error |= __copy_to_user(&name->nodename, &utsname()->nodename,
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__OLD_UTS_LEN);
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error |= __put_user(0, name->nodename + __OLD_UTS_LEN);
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error |= __copy_to_user(&name->release, &utsname()->release,
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__OLD_UTS_LEN);
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error |= __put_user(0, name->release + __OLD_UTS_LEN);
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error |= __copy_to_user(&name->version, &utsname()->version,
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__OLD_UTS_LEN);
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error |= __put_user(0, name->version + __OLD_UTS_LEN);
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error |= __copy_to_user(&name->machine, &utsname()->machine,
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__OLD_UTS_LEN);
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||||
error |= __put_user(0, name->machine + __OLD_UTS_LEN);
|
||||
|
||||
up_read(&uts_sem);
|
||||
|
||||
error = error ? -EFAULT : 0;
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Do a system call from kernel instead of calling sys_execve so we
|
||||
* end up with proper pt_regs.
|
||||
|
|
|
@ -31,6 +31,8 @@ struct msqid_ds;
|
|||
struct new_utsname;
|
||||
struct nfsctl_arg;
|
||||
struct __old_kernel_stat;
|
||||
struct oldold_utsname;
|
||||
struct old_utsname;
|
||||
struct pollfd;
|
||||
struct rlimit;
|
||||
struct rusage;
|
||||
|
@ -655,6 +657,8 @@ asmlinkage long sys_gethostname(char __user *name, int len);
|
|||
asmlinkage long sys_sethostname(char __user *name, int len);
|
||||
asmlinkage long sys_setdomainname(char __user *name, int len);
|
||||
asmlinkage long sys_newuname(struct new_utsname __user *name);
|
||||
asmlinkage long sys_uname(struct old_utsname __user *);
|
||||
asmlinkage long sys_olduname(struct oldold_utsname __user *);
|
||||
|
||||
asmlinkage long sys_getrlimit(unsigned int resource,
|
||||
struct rlimit __user *rlim);
|
||||
|
|
54
kernel/sys.c
54
kernel/sys.c
|
@ -1138,6 +1138,60 @@ SYSCALL_DEFINE1(newuname, struct new_utsname __user *, name)
|
|||
return errno;
|
||||
}
|
||||
|
||||
#ifdef __ARCH_WANT_SYS_OLD_UNAME
|
||||
/*
|
||||
* Old cruft
|
||||
*/
|
||||
SYSCALL_DEFINE1(uname, struct old_utsname __user *, name)
|
||||
{
|
||||
int error = 0;
|
||||
|
||||
if (!name)
|
||||
return -EFAULT;
|
||||
|
||||
down_read(&uts_sem);
|
||||
if (copy_to_user(name, utsname(), sizeof(*name)))
|
||||
error = -EFAULT;
|
||||
up_read(&uts_sem);
|
||||
|
||||
if (!error && override_architecture(name))
|
||||
error = -EFAULT;
|
||||
return error;
|
||||
}
|
||||
|
||||
SYSCALL_DEFINE1(olduname, struct oldold_utsname __user *, name)
|
||||
{
|
||||
int error;
|
||||
|
||||
if (!name)
|
||||
return -EFAULT;
|
||||
if (!access_ok(VERIFY_WRITE, name, sizeof(struct oldold_utsname)))
|
||||
return -EFAULT;
|
||||
|
||||
down_read(&uts_sem);
|
||||
error = __copy_to_user(&name->sysname, &utsname()->sysname,
|
||||
__OLD_UTS_LEN);
|
||||
error |= __put_user(0, name->sysname + __OLD_UTS_LEN);
|
||||
error |= __copy_to_user(&name->nodename, &utsname()->nodename,
|
||||
__OLD_UTS_LEN);
|
||||
error |= __put_user(0, name->nodename + __OLD_UTS_LEN);
|
||||
error |= __copy_to_user(&name->release, &utsname()->release,
|
||||
__OLD_UTS_LEN);
|
||||
error |= __put_user(0, name->release + __OLD_UTS_LEN);
|
||||
error |= __copy_to_user(&name->version, &utsname()->version,
|
||||
__OLD_UTS_LEN);
|
||||
error |= __put_user(0, name->version + __OLD_UTS_LEN);
|
||||
error |= __copy_to_user(&name->machine, &utsname()->machine,
|
||||
__OLD_UTS_LEN);
|
||||
error |= __put_user(0, name->machine + __OLD_UTS_LEN);
|
||||
up_read(&uts_sem);
|
||||
|
||||
if (!error && override_architecture(name))
|
||||
error = -EFAULT;
|
||||
return error ? -EFAULT : 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
SYSCALL_DEFINE2(sethostname, char __user *, name, int, len)
|
||||
{
|
||||
int errno;
|
||||
|
|
Loading…
Reference in a new issue