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[PATCH] uml: error handling fixes

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Blairsorblade noticed some confusion between our use of a system
call's return value and errno.  This patch fixes a number of related
bugs -
	using errno instead of a return value
	using a return value instead of errno
	forgetting to negate a error return to get a positive error code

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jeff Dike
2006-05-01 12:16:00 -07:00
committed by Linus Torvalds
parent 347b3dc2fa
commit 2ace87b950
5 changed files with 10 additions and 10 deletions
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4
arch/um/os-Linux/sys-i386/registers.c
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@@ -104,7 +104,7 @@ void init_registers(int pid)
err = ptrace(PTRACE_GETREGS, pid, 0, exec_regs);
if(err)
panic("check_ptrace : PTRACE_GETREGS failed, errno = %d",
err);
errno);
errno = 0;
err = ptrace(PTRACE_GETFPXREGS, pid, 0, exec_fpx_regs);
@@ -119,7 +119,7 @@ void init_registers(int pid)
err = ptrace(PTRACE_GETFPREGS, pid, 0, exec_fp_regs);
if(err)
panic("check_ptrace : PTRACE_GETFPREGS failed, errno = %d",
err);
errno);
}
void get_safe_registers(unsigned long *regs, unsigned long *fp_regs)