diff options
| author | des <des@FreeBSD.org> | 2002-03-16 02:40:02 +0000 |
|---|---|---|
| committer | des <des@FreeBSD.org> | 2002-03-16 02:40:02 +0000 |
| commit | cba4e414333169bc2a820cc5efe9fb4ae0ac2a5f (patch) | |
| tree | 149153da8a4a3bf8a43a460521eaa222b227cdf5 /sys/kern/sys_process.c | |
| parent | a3d902c96d3525c026a5b66ba8228d9254de662f (diff) | |
| download | FreeBSD-src-cba4e414333169bc2a820cc5efe9fb4ae0ac2a5f.zip FreeBSD-src-cba4e414333169bc2a820cc5efe9fb4ae0ac2a5f.tar.gz | |
Implement PT_IO (read / write arbitrary amounts of data or text).
Submitted by: Artur Grabowski <art@{blahonga,openbsd}.org>
Obtained from: OpenBSD
Diffstat (limited to 'sys/kern/sys_process.c')
| -rw-r--r-- | sys/kern/sys_process.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/sys/kern/sys_process.c b/sys/kern/sys_process.c index e6af165..39ff515 100644 --- a/sys/kern/sys_process.c +++ b/sys/kern/sys_process.c @@ -327,6 +327,7 @@ ptrace(struct thread *td, struct ptrace_args *uap) * structs may be too large to put on the stack anyway. */ union { + struct ptrace_io_desc piod; struct dbreg dbreg; struct fpreg fpreg; struct reg reg; @@ -390,6 +391,7 @@ ptrace(struct thread *td, struct ptrace_args *uap) case PT_READ_D: case PT_WRITE_I: case PT_WRITE_D: + case PT_IO: case PT_CONTINUE: case PT_KILL: case PT_STEP: @@ -568,6 +570,35 @@ ptrace(struct thread *td, struct ptrace_args *uap) } return (error); + case PT_IO: + error = copyin(uap->addr, &r.piod, sizeof r.piod); + if (error) + return (error); + iov.iov_base = r.piod.piod_addr; + iov.iov_len = r.piod.piod_len; + uio.uio_iov = &iov; + uio.uio_iovcnt = 1; + uio.uio_offset = (off_t)(uintptr_t)r.piod.piod_offs; + uio.uio_resid = r.piod.piod_len; + uio.uio_segflg = UIO_USERSPACE; + uio.uio_td = td; + switch (r.piod.piod_op) { + case PIOD_READ_D: + case PIOD_READ_I: + uio.uio_rw = UIO_READ; + break; + case PIOD_WRITE_D: + case PIOD_WRITE_I: + uio.uio_rw = UIO_WRITE; + break; + default: + return (EINVAL); + } + error = proc_rwmem(p, &uio); + r.piod.piod_len -= uio.uio_resid; + (void)copyout(&r.piod, uap->addr, sizeof r.piod); + return (error); + case PT_KILL: uap->data = SIGKILL; goto sendsig; /* in PT_CONTINUE above */ |
