diff options
Diffstat (limited to 'apply.c')
| -rw-r--r-- | apply.c | 61 |
1 files changed, 43 insertions, 18 deletions
@@ -8,20 +8,32 @@ */ #include "cache.h" +#include "abspath.h" +#include "alloc.h" +#include "base85.h" #include "config.h" #include "object-store.h" #include "blob.h" #include "delta.h" #include "diff.h" #include "dir.h" +#include "environment.h" +#include "gettext.h" +#include "hex.h" #include "xdiff-interface.h" #include "ll-merge.h" #include "lockfile.h" +#include "object-name.h" +#include "object-file.h" #include "parse-options.h" #include "quote.h" #include "rerere.h" #include "apply.h" #include "entry.h" +#include "setup.h" +#include "symlinks.h" +#include "ws.h" +#include "wrapper.h" struct gitdiff_data { struct strbuf *root; @@ -125,7 +137,7 @@ void clear_apply_state(struct apply_state *state) /* &state->fn_table is cleared at the end of apply_patch() */ } -static void mute_routine(const char *msg, va_list params) +static void mute_routine(const char *msg UNUSED, va_list params UNUSED) { /* do nothing */ } @@ -386,9 +398,19 @@ static void say_patch_name(FILE *output, const char *fmt, struct patch *patch) #define SLOP (16) +/* + * apply.c isn't equipped to handle arbitrarily large patches, because + * it intermingles `unsigned long` with `int` for the type used to store + * buffer lengths. + * + * Only process patches that are just shy of 1 GiB large in order to + * avoid any truncation or overflow issues. + */ +#define MAX_APPLY_SIZE (1024UL * 1024 * 1023) + static int read_patch_file(struct strbuf *sb, int fd) { - if (strbuf_read(sb, fd, 0) < 0) + if (strbuf_read(sb, fd, 0) < 0 || sb->len >= MAX_APPLY_SIZE) return error_errno("git apply: failed to read"); /* @@ -892,9 +914,9 @@ static int parse_traditional_patch(struct apply_state *state, return 0; } -static int gitdiff_hdrend(struct gitdiff_data *state, - const char *line, - struct patch *patch) +static int gitdiff_hdrend(struct gitdiff_data *state UNUSED, + const char *line UNUSED, + struct patch *patch UNUSED) { return 1; } @@ -1044,7 +1066,7 @@ static int gitdiff_renamedst(struct gitdiff_data *state, return 0; } -static int gitdiff_similarity(struct gitdiff_data *state, +static int gitdiff_similarity(struct gitdiff_data *state UNUSED, const char *line, struct patch *patch) { @@ -1054,7 +1076,7 @@ static int gitdiff_similarity(struct gitdiff_data *state, return 0; } -static int gitdiff_dissimilarity(struct gitdiff_data *state, +static int gitdiff_dissimilarity(struct gitdiff_data *state UNUSED, const char *line, struct patch *patch) { @@ -1104,9 +1126,9 @@ static int gitdiff_index(struct gitdiff_data *state, * This is normal for a diff that doesn't change anything: we'll fall through * into the next diff. Tell the parser to break out. */ -static int gitdiff_unrecognized(struct gitdiff_data *state, - const char *line, - struct patch *patch) +static int gitdiff_unrecognized(struct gitdiff_data *state UNUSED, + const char *line UNUSED, + struct patch *patch UNUSED) { return 1; } @@ -2903,7 +2925,7 @@ static int apply_one_fragment(struct apply_state *state, break; case ' ': if (plen && (ws_rule & WS_BLANK_AT_EOF) && - ws_blank_line(patch + 1, plen, ws_rule)) + ws_blank_line(patch + 1, plen)) is_blank_context = 1; /* fallthrough */ case '-': @@ -2932,7 +2954,7 @@ static int apply_one_fragment(struct apply_state *state, (first == '+' ? 0 : LINE_COMMON)); if (first == '+' && (ws_rule & WS_BLANK_AT_EOF) && - ws_blank_line(patch + 1, plen, ws_rule)) + ws_blank_line(patch + 1, plen)) added_blank_line = 1; break; case '@': case '\\': @@ -3191,7 +3213,8 @@ static int apply_binary(struct apply_state *state, unsigned long size; char *result; - result = read_object_file(&oid, &type, &size); + result = repo_read_object_file(the_repository, &oid, &type, + &size); if (!result) return error(_("the necessary postimage %s for " "'%s' cannot be read"), @@ -3254,7 +3277,8 @@ static int read_blob_object(struct strbuf *buf, const struct object_id *oid, uns unsigned long sz; char *result; - result = read_object_file(oid, &type, &sz); + result = repo_read_object_file(the_repository, oid, &type, + &sz); if (!result) return -1; /* XXX read_sha1_file NUL-terminates */ @@ -3482,7 +3506,8 @@ static int resolve_to(struct image *image, const struct object_id *result_id) clear_image(image); - image->buf = read_object_file(result_id, &type, &size); + image->buf = repo_read_object_file(the_repository, result_id, &type, + &size); if (!image->buf || type != OBJ_BLOB) die("unable to read blob object %s", oid_to_hex(result_id)); image->len = size; @@ -3600,7 +3625,7 @@ static int try_threeway(struct apply_state *state, /* Preimage the patch was prepared for */ if (patch->is_new) write_object_file("", 0, OBJ_BLOB, &pre_oid); - else if (get_oid(patch->old_oid_prefix, &pre_oid) || + else if (repo_get_oid(the_repository, patch->old_oid_prefix, &pre_oid) || read_blob_object(&buf, &pre_oid, patch->old_mode)) return error(_("repository lacks the necessary blob to perform 3-way merge.")); @@ -4095,7 +4120,7 @@ static int preimage_oid_in_gitlink_patch(struct patch *p, struct object_id *oid) static int build_fake_ancestor(struct apply_state *state, struct patch *list) { struct patch *patch; - struct index_state result = { NULL }; + struct index_state result = INDEX_STATE_INIT(state->repo); struct lock_file lock = LOCK_INIT; int res; @@ -4117,7 +4142,7 @@ static int build_fake_ancestor(struct apply_state *state, struct patch *list) else return error(_("sha1 information is lacking or " "useless for submodule %s"), name); - } else if (!get_oid_blob(patch->old_oid_prefix, &oid)) { + } else if (!repo_get_oid_blob(the_repository, patch->old_oid_prefix, &oid)) { ; /* ok */ } else if (!patch->lines_added && !patch->lines_deleted) { /* mode-only change: update the current */ |