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[128.78.31.246]) by smtp.gmail.com with ESMTPSA id o2sm8539048wjo.3.2016.08.08.14.03.58 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 08 Aug 2016 14:03:59 -0700 (PDT) From: Christian Couder X-Google-Original-From: Christian Couder To: git@vger.kernel.org Cc: Junio C Hamano , Jeff King , =?UTF-8?q?=C3=86var=20Arnfj=C3=B6r=C3=B0=20Bjarmason?= , Karsten Blees , Nguyen Thai Ngoc Duy , Stefan Beller , Eric Sunshine , Ramsay Jones , Johannes Sixt , =?UTF-8?q?Ren=C3=A9=20Scharfe?= , Christian Couder Subject: [PATCH v10 06/40] builtin/apply: make parse_chunk() return a negative integer on error Date: Mon, 8 Aug 2016 23:03:03 +0200 Message-Id: <20160808210337.5038-7-chriscool@tuxfamily.org> X-Mailer: git-send-email 2.9.2.614.g5428e0c In-Reply-To: <20160808210337.5038-1-chriscool@tuxfamily.org> References: <20160808210337.5038-1-chriscool@tuxfamily.org> Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org To libify `git apply` functionality we have to signal errors to the caller instead of die()ing or exit()ing. To do that in a compatible manner with the rest of the error handling in builtin/apply.c, parse_chunk() should return a negative integer instead of calling die() or exit(). As parse_chunk() is called only by apply_patch() which already returns either -1 or -128 when an error happened, let's make it also return -1 or -128. This makes it compatible with what find_header() and parse_binary() already return. Helped-by: Eric Sunshine Signed-off-by: Christian Couder --- builtin/apply.c | 22 ++++++++++++++-------- 1 file changed, 14 insertions(+), 8 deletions(-) diff --git a/builtin/apply.c b/builtin/apply.c index 434ba0c..c07d142 100644 --- a/builtin/apply.c +++ b/builtin/apply.c @@ -1996,22 +1996,22 @@ static int use_patch(struct apply_state *state, struct patch *p) return !state->has_include; } - /* * Read the patch text in "buffer" that extends for "size" bytes; stop * reading after seeing a single patch (i.e. changes to a single file). * Create fragments (i.e. patch hunks) and hang them to the given patch. - * Return the number of bytes consumed, so that the caller can call us - * again for the next patch. + * + * Returns: + * -1 if no header was found or parse_binary() failed, + * -128 on another error, + * the number of bytes consumed otherwise, + * so that the caller can call us again for the next patch. */ static int parse_chunk(struct apply_state *state, char *buffer, unsigned long size, struct patch *patch) { int hdrsize, patchsize; int offset = find_header(state, buffer, size, &hdrsize, patch); - if (offset == -128) - exit(128); - if (offset < 0) return offset; @@ -2071,8 +2071,10 @@ static int parse_chunk(struct apply_state *state, char *buffer, unsigned long si * empty to us here. */ if ((state->apply || state->check) && - (!patch->is_binary && !metadata_changes(patch))) - die(_("patch with only garbage at line %d"), state->linenr); + (!patch->is_binary && !metadata_changes(patch))) { + error(_("patch with only garbage at line %d"), state->linenr); + return -128; + } } return offset + hdrsize + patchsize; @@ -4455,6 +4457,10 @@ static int apply_patch(struct apply_state *state, nr = parse_chunk(state, buf.buf + offset, buf.len - offset, patch); if (nr < 0) { free_patch(patch); + if (nr == -128) { + res = -128; + goto end; + } break; } if (state->apply_in_reverse) -- 2.9.2.614.g4980f51