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Copyright 2015 Joyent, Inc.

.Dd May 11, 2016 .Dt PR_GETSOCKOPT 3PROC .Os .Sh NAME .Nm pr_getsockopt .Nd inject getsockopt library call call into victim process .Sh SYNOPSIS .Lb libproc n libproc.h .Ft int .Fo pr_getsockopt .Fa "struct ps_prochandle *P" .Fa "int sock" .Fa "int level" .Fa "int optname" .Fa "void *optval" .Fa "int *optlen" .Fc .Sh DESCRIPTION The .Fn pr_getsockopt function injects the .Xr getsockopt 3SOCKET library call call into the target process .Fa P by means of the agent lwp. If the process handle .Fa P is the value .Dv NULL then this will be equivalent to calling .Xr getsockopt 3SOCKET on the currently running process.

p The arguments .Fa sock , .Fa level , .Fa optname , .Fa optval , and .Fa optlen have the same meaning as in .Xr getsockopt 3SOCKET , see .Xr getsockopt 3SOCKET for the full description and purpose of the .Sy getsockopt system call and its arguments.

p The .Fn pr_getsockopt function only works on active processes. Process handles that correspond to core files, zombie processes, or ELF objects do not support system call injection. .Sh RETURN VALUES Upon successful completion, the .Fn pr_getsockopt function's return value is that described in .Xr getsockopt 3SOCKET . Otherwise, .Sy -1 is returned and .Sy errno is set to .Er ENOSYS to indicate that the system call could not be injected. .Sh ERRORS For the full list of errors see the .Sy ERRORS section in .Xr getsockopt 3SOCKET .

p The .Fn pr_getsockopt function will fail if: l -tag -width Er t Er ENOSYS An error occurred while trying to invoke the agent lwp and inject a system call in the process handle .Fa P or the process handle .Fa P does not support system call injection. .El .Sh INTERFACE STABILITY .Sy Uncommitted .Sh MT-LEVEL See .Sy LOCKING in .Xr libproc 3LIB . .Sh SEE ALSO .Xr libproc 3LIB , .Xr getsockopt 3SOCKET , .Xr proc 4