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author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2015-02-18 00:58:35 +0100 |
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committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2015-02-18 00:58:35 +0100 |
commit | 49a086299e047b18280457b654790ef4a2e5abfa (patch) | |
tree | c2b29e0734d560ce4f58c6945390650b5cac8a1b /open_issues/glibc_ptrace.mdwn | |
parent | e2b3602ea241cd0f6bc3db88bf055bee459028b6 (diff) | |
download | web-49a086299e047b18280457b654790ef4a2e5abfa.tar.gz web-49a086299e047b18280457b654790ef4a2e5abfa.tar.bz2 web-49a086299e047b18280457b654790ef4a2e5abfa.zip |
Revert "rename open_issues.mdwn to service_solahart_jakarta_selatan__082122541663.mdwn"
This reverts commit 95878586ec7611791f4001a4ee17abf943fae3c1.
Diffstat (limited to 'open_issues/glibc_ptrace.mdwn')
-rw-r--r-- | open_issues/glibc_ptrace.mdwn | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/open_issues/glibc_ptrace.mdwn b/open_issues/glibc_ptrace.mdwn new file mode 100644 index 00000000..7ca07077 --- /dev/null +++ b/open_issues/glibc_ptrace.mdwn @@ -0,0 +1,43 @@ +[[!meta copyright="Copyright © 2009, 2012 Free Software Foundation, Inc."]] + +[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable +id="license" text="Permission is granted to copy, distribute and/or modify this +document under the terms of the GNU Free Documentation License, Version 1.2 or +any later version published by the Free Software Foundation; with no Invariant +Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license +is included in the section entitled [[GNU Free Documentation +License|/fdl]]."]]"""]] + +[[!meta title="glibc: ptrace"]] + +[[!tag open_issue_glibc]] + +`ptrace` has some issues (`sysdeps/mach/hurd/ptrace.c`). + + * Our implementation (and the generic one in `misc/ptrace.c`) differ + from the Linux one (`sysdeps/unix/sysv/linux/ptrace.c`) + w.r.t. handling of... + + * the third argument: `int data` vs. `void *data`; + + * `void *addr2` -- Linux doesn't have this, but we provide some + additional functionalty using this; + + * function declaration: Linux has **`long`** `int ptrace (enum + __ptrace_request __request, ...)` **`__THROW`**, we have `int ptrace + (enum __ptrace_request __request, ...)`; + + * interface do differ, e.g., Linux' `PTRACE_GETREGS` uses `void + *data`, we use `void *addr` for returning the struct, and in + Linux this is a `struct user_regs_struct` from `linux/user.h`, + and for us it is a `struct i386_thread_state` from + `mach/i386/thread_status.h`; + + * Linux provides some functionality that we don't provide: + `PTRACE_GETFPXREGS` , `PTRACE_SINGLESTEP`. + + * Some parts are wrongly implemented, e.g., `PTRACE_GETREGS` and + `PTRACE_SETREGS` both do the same thing. + +Also consider the `sysdeps/generic/sys/ptrace.h` and +`sysdeps/unix/sysv/linux/sys/ptrace.h` files. |