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Commit a7064eb3 authored by jeyr's avatar jeyr Committed by Mohammed Nayeem Ur Rahman
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adsprpc: Allow mapping of buffers with fd value as zero 



Allow mapping of buffers with fd value as zero.

Change-Id: Ifd8020c25ddc9239bbbef1af2d9769414ce36939
Signed-off-by: default avatarjeyr <jeyr@codeaurora.org>
Signed-off-by: default avatarMohammed Nayeem Ur Rahman <mohara@codeaurora.org>
parent eedfb960

drivers/char/adsprpc.c

+11 −9
Original line number Diff line number Diff line
@@ -1167,6 +1167,8 @@ static int context_alloc(struct fastrpc_file *fl, uint32_t kernel, 
						bufs * sizeof(*ctx->fds));

		if (err)

			goto bail;

	} else {

		ctx->fds = NULL;

	}

	if (invokefd->attrs) {

		K_COPY_FROM_USER(err, kernel, ctx->attrs, invokefd->attrs,
@@ -1409,7 +1411,7 @@ static int get_args(uint32_t kernel, struct smq_invoke_ctx *ctx) 
		size_t len = lpra[i].buf.len;



		mutex_lock(&ctx->fl->map_mutex);

		if (ctx->fds[i] && (ctx->fds[i] != -1))

		if (ctx->fds && (ctx->fds[i] != -1))

			fastrpc_mmap_create(ctx->fl, ctx->fds[i],

					ctx->attrs[i], buf, len,

					mflags, &ctx->maps[i]);
@@ -2067,11 +2069,11 @@ static int fastrpc_init_process(struct fastrpc_file *fl, 
		inbuf.pageslen = 1;

		ra[0].buf.pv = (void *)&inbuf;

		ra[0].buf.len = sizeof(inbuf);

		fds[0] = 0;

		fds[0] = -1;



		ra[1].buf.pv = (void *)current->comm;

		ra[1].buf.len = inbuf.namelen;

		fds[1] = 0;

		fds[1] = -1;



		ra[2].buf.pv = (void *)init->file;

		ra[2].buf.len = inbuf.filelen;
@@ -2081,17 +2083,17 @@ static int fastrpc_init_process(struct fastrpc_file *fl, 
		pages[0].size = imem->size;

		ra[3].buf.pv = (void *)pages;

		ra[3].buf.len = 1 * sizeof(*pages);

		fds[3] = 0;

		fds[3] = -1;



		inbuf.attrs = uproc->attrs;

		ra[4].buf.pv = (void *)&(inbuf.attrs);

		ra[4].buf.len = sizeof(inbuf.attrs);

		fds[4] = 0;

		fds[4] = -1;



		inbuf.siglen = uproc->siglen;

		ra[5].buf.pv = (void *)&(inbuf.siglen);

		ra[5].buf.len = sizeof(inbuf.siglen);

		fds[5] = 0;

		fds[5] = -1;



		ioctl.inv.handle = FASTRPC_STATIC_HANDLE_PROCESS_GROUP;

		ioctl.inv.sc = REMOTE_SCALARS_MAKE(6, 4, 0);
@@ -2170,18 +2172,18 @@ static int fastrpc_init_process(struct fastrpc_file *fl, 


		ra[0].buf.pv = (void *)&inbuf;

		ra[0].buf.len = sizeof(inbuf);

		fds[0] = 0;

		fds[0] = -1;



		ra[1].buf.pv = (void *)proc_name;

		ra[1].buf.len = inbuf.namelen;

		fds[1] = 0;

		fds[1] = -1;



		pages[0].addr = phys;

		pages[0].size = size;



		ra[2].buf.pv = (void *)pages;

		ra[2].buf.len = sizeof(*pages);

		fds[2] = 0;

		fds[2] = -1;

		ioctl.inv.handle = FASTRPC_STATIC_HANDLE_PROCESS_GROUP;



		ioctl.inv.sc = REMOTE_SCALARS_MAKE(8, 3, 0);