5d48545e5e
Reimplement execvp for our purposes - after we call fork() it is fundamentally unsafe to use the kernel allocator - current is not valid there. So we simply pass to our modified execvp() a preallocated buffer. This fixes a real bug and works very well in testing (I've seen indirectly warning messages from the forked thread - they went on the pipe connected to its stdout and where read as a number by UML, when calling read_output(). I verified the obtained number corresponded to "BUG:"). The added use of __cant_sleep() is not a new bug since __cant_sleep() is already used in the same function - passing an atomicity parameter would be better but it would require huge change, stating that this function must not be called in atomic context and can sleep is a better idea (will make sure of this gradually). Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> |
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| .. | ||
| skas | ||
| sysdep-i386 | ||
| sysdep-ia64 | ||
| sysdep-ppc | ||
| sysdep-x86_64 | ||
| tt | ||
| aio.h | ||
| chan_kern.h | ||
| chan_user.h | ||
| choose-mode.h | ||
| common-offsets.h | ||
| elf_user.h | ||
| frame_kern.h | ||
| init.h | ||
| initrd.h | ||
| irq_kern.h | ||
| irq_user.h | ||
| kern.h | ||
| kern_util.h | ||
| line.h | ||
| longjmp.h | ||
| mconsole.h | ||
| mconsole_kern.h | ||
| mem.h | ||
| mem_kern.h | ||
| mem_user.h | ||
| misc_constants.h | ||
| mode.h | ||
| mode_kern.h | ||
| net_kern.h | ||
| net_user.h | ||
| os.h | ||
| process.h | ||
| ptrace_user.h | ||
| registers.h | ||
| sigcontext.h | ||
| sigio.h | ||
| signal_kern.h | ||
| skas_ptrace.h | ||
| skas_ptregs.h | ||
| syscall.h | ||
| sysrq.h | ||
| task.h | ||
| tempfile.h | ||
| tlb.h | ||
| ubd_user.h | ||
| um_malloc.h | ||
| um_mmu.h | ||
| um_uaccess.h | ||
| umid.h | ||
| uml_uaccess.h | ||
| user.h | ||
| user_util.h | ||