[osol-discuss] How to get current working directory of the current process in the kernel
Hello everyone: When I am programming a kernel module for Solaris, I encountered one problem: I cannot get the the absolute path for the current working directory of the current process. In user space, we can do this by calling getcwd(), but this function does not take kernel address as parameter so I can not call it in the kernel. Then how can I getcwd in the kernel? I can get the vnode pointer of the current dir, If there are any some easy ways to convert the vnode pointer to the absolute path name, it's ok too. Thanks a lot! Niu Lin. ___ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
Re: [osol-discuss] How to get current working directory of the current process in the kernel
On Tue, 20 May 2008, NiuLin wrote: Hello everyone: When I am programming a kernel module for Solaris, I encountered one problem: I cannot get the the absolute path for the current working directory of the current process. In user space, we can do this by calling getcwd(), but this function does not take kernel address as parameter so I can not call it in the kernel. Then how can I getcwd in the kernel? I can get the vnode pointer of the current dir, If there are any some easy ways to convert the vnode pointer to the absolute path name, it's ok too. Use this one: http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/common/fs/lookup.c#vnodetopath FrankH. ___ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
Re: [osol-discuss] How to get current working directory of the current process in the kernel
Thanks a lot for your quick reply! Actually, I have found this code already, but as I know, dogetcwd is not exported by the kernel (not found in the include files). How can I call this function? 2008/5/20 [EMAIL PROTECTED]: On Tue, 20 May 2008, NiuLin wrote: Hello everyone: When I am programming a kernel module for Solaris, I encountered one problem: I cannot get the the absolute path for the current working directory of the current process. In user space, we can do this by calling getcwd(), but this function does not take kernel address as parameter so I can not call it in the kernel. Then how can I getcwd in the kernel? I can get the vnode pointer of the current dir, If there are any some easy ways to convert the vnode pointer to the absolute path name, it's ok too. Use this one: http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/common/fs/lookup.c#vnodetopath FrankH. -- Thanks and Regards, Niu Lin ___ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
Re: [osol-discuss] How to get current working directory of the current process in the kernel
On Tue, 20 May 2008, NiuLin wrote: Thanks a lot for your quick reply! Actually, I have found this code already, but as I know, dogetcwd is not exported by the kernel (not found in the include files). How can I call this function? #include /sys/pathname.h for vnodetopath(). FrankH. 2008/5/20 [EMAIL PROTECTED]: On Tue, 20 May 2008, NiuLin wrote: Hello everyone: When I am programming a kernel module for Solaris, I encountered one problem: I cannot get the the absolute path for the current working directory of the current process. In user space, we can do this by calling getcwd(), but this function does not take kernel address as parameter so I can not call it in the kernel. Then how can I getcwd in the kernel? I can get the vnode pointer of the current dir, If there are any some easy ways to convert the vnode pointer to the absolute path name, it's ok too. Use this one: http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/common/fs/lookup.c#vnodetopath FrankH. -- Thanks and Regards, Niu Lin -- No good can come from selling your freedom, not for all the gold in the world, for the value of this heavenly gift far exceeds that of any fortune on earth. -- ___ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
Re: [osol-discuss] How to get current working directory of the current process in the kernel
Thanks! I'm sorry I have missed some information in my original post, I'm writing the module for Solaris 8, I checked the header files of Solaris 8 but cannot find vnodetopath. Which function can I use on Solaris 8? 2008/5/20 [EMAIL PROTECTED]: On Tue, 20 May 2008, NiuLin wrote: Thanks a lot for your quick reply! Actually, I have found this code already, but as I know, dogetcwd is not exported by the kernel (not found in the include files). How can I call this function? #include /sys/pathname.h for vnodetopath(). FrankH. 2008/5/20 [EMAIL PROTECTED]: On Tue, 20 May 2008, NiuLin wrote: Hello everyone: When I am programming a kernel module for Solaris, I encountered one problem: I cannot get the the absolute path for the current working directory of the current process. In user space, we can do this by calling getcwd(), but this function does not take kernel address as parameter so I can not call it in the kernel. Then how can I getcwd in the kernel? I can get the vnode pointer of the current dir, If there are any some easy ways to convert the vnode pointer to the absolute path name, it's ok too. Use this one: http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/common/fs/lookup.c#vnodetopath FrankH. -- Thanks and Regards, Niu Lin -- No good can come from selling your freedom, not for all the gold in the world, for the value of this heavenly gift far exceeds that of any fortune on earth. -- -- Thanks and Regards, Niu Lin ___ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
Re: [osol-discuss] How to get current working directory of the current process in the kernel
On Tue, 20 May 2008, NiuLin wrote: Thanks! I'm sorry I have missed some information in my original post, I'm writing the module for Solaris 8, I checked the header files of Solaris 8 but cannot find vnodetopath. Which function can I use on Solaris 8? Please ask Sun Developer support for S8, this forum is about OpenSolaris ... FrankH. 2008/5/20 [EMAIL PROTECTED]: On Tue, 20 May 2008, NiuLin wrote: Thanks a lot for your quick reply! Actually, I have found this code already, but as I know, dogetcwd is not exported by the kernel (not found in the include files). How can I call this function? #include /sys/pathname.h for vnodetopath(). FrankH. 2008/5/20 [EMAIL PROTECTED]: On Tue, 20 May 2008, NiuLin wrote: Hello everyone: When I am programming a kernel module for Solaris, I encountered one problem: I cannot get the the absolute path for the current working directory of the current process. In user space, we can do this by calling getcwd(), but this function does not take kernel address as parameter so I can not call it in the kernel. Then how can I getcwd in the kernel? I can get the vnode pointer of the current dir, If there are any some easy ways to convert the vnode pointer to the absolute path name, it's ok too. Use this one: http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/common/fs/lookup.c#vnodetopath FrankH. -- Thanks and Regards, Niu Lin -- No good can come from selling your freedom, not for all the gold in the world, for the value of this heavenly gift far exceeds that of any fortune on earth. -- -- Thanks and Regards, Niu Lin -- No good can come from selling your freedom, not for all the gold in the world, for the value of this heavenly gift far exceeds that of any fortune on earth. -- ___ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
Re: [osol-discuss] How to get current working directory of the current process in the kernel
NiuLin [EMAIL PROTECTED] wrote: Thanks! I'm sorry I have missed some information in my original post, I'm writing the module for Solaris 8, I checked the header files of Solaris 8 but cannot find vnodetopath. Which function can I use on Solaris 8? In kernel getcwd() has been added in Solaris 11 for BrandZ (linux) support. getcwd() was traditionally a user space function in UNIX. Jörg -- EMail:[EMAIL PROTECTED] (home) Jörg Schilling D-13353 Berlin [EMAIL PROTECTED](uni) [EMAIL PROTECTED] (work) Blog: http://schily.blogspot.com/ URL: http://cdrecord.berlios.de/old/private/ ftp://ftp.berlios.de/pub/schily ___ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
