From 39c68542fc8d8477f2080c99efedb9dce975abc6 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 7 Jan 2009 19:54:47 -0800 Subject: Wrap inflate and other zlib routines for better error reporting R. Tyler Ballance reported a mysterious transient repository corruption; after much digging, it turns out that we were not catching and reporting memory allocation errors from some calls we make to zlib. This one _just_ wraps things; it doesn't do the "retry on low memory error" part, at least not yet. It is an independent issue from the reporting. Some of the errors are expected and passed back to the caller, but we die when zlib reports it failed to allocate memory for now. Signed-off-by: Junio C Hamano --- wrapper.c | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) (limited to 'wrapper.c') diff --git a/wrapper.c b/wrapper.c index 93562f03ee..c85ca52ec6 100644 --- a/wrapper.c +++ b/wrapper.c @@ -196,3 +196,63 @@ int xmkstemp(char *template) die("Unable to create temporary file: %s", strerror(errno)); return fd; } + +/* + * zlib wrappers to make sure we don't silently miss errors + * at init time. + */ +void git_inflate_init(z_streamp strm) +{ + const char *err; + + switch (inflateInit(strm)) { + case Z_OK: + return; + + case Z_MEM_ERROR: + err = "out of memory"; + break; + case Z_VERSION_ERROR: + err = "wrong version"; + break; + default: + err = "error"; + } + die("inflateInit: %s (%s)", err, strm->msg ? strm->msg : "no message"); +} + +void git_inflate_end(z_streamp strm) +{ + if (inflateEnd(strm) != Z_OK) + error("inflateEnd: %s", strm->msg ? strm->msg : "failed"); +} + +int git_inflate(z_streamp strm, int flush) +{ + int ret = inflate(strm, flush); + const char *err; + + switch (ret) { + /* Out of memory is fatal. */ + case Z_MEM_ERROR: + die("inflate: out of memory"); + + /* Data corruption errors: we may want to recover from them (fsck) */ + case Z_NEED_DICT: + err = "needs dictionary"; break; + case Z_DATA_ERROR: + err = "data stream error"; break; + case Z_STREAM_ERROR: + err = "stream consistency error"; break; + default: + err = "unknown error"; break; + + /* Z_BUF_ERROR: normal, needs more space in the output buffer */ + case Z_BUF_ERROR: + case Z_OK: + case Z_STREAM_END: + return ret; + } + error("inflate: %s (%s)", err, strm->msg ? strm->msg : "no message"); + return ret; +} -- cgit v1.3-5-g9baa From 6e180cdcecbb3e828aa892925d7ef67abf81ad80 Mon Sep 17 00:00:00 2001 From: Junio C Hamano Date: Tue, 24 Feb 2009 23:11:29 -0800 Subject: Make sure objects/pack exists before creating a new pack In a repository created with git older than f49fb35 (git-init-db: create "pack" subdirectory under objects, 2005-06-27), objects/pack/ directory is not created upon initialization. It was Ok because subdirectories are created as needed inside directories init-db creates, and back then, packfiles were recent invention. After the said commit, new codepaths started relying on the presense of objects/pack/ directory in the repository. This was exacerbated with 8b4eb6b (Do not perform cross-directory renames when creating packs, 2008-09-22) that moved the location temporary pack files are created from objects/ directory to objects/pack/ directory, because moving temporary to the final location was done carefully with lazy leading directory creation. Many packfile related operations in such an old repository can fail mysteriously because of this. This commit introduces two helper functions to make things work better. - odb_mkstemp() is a specialized version of mkstemp() to refactor the code and teach it to create leading directories as needed; - odb_pack_keep() refactors the code to create a ".keep" file while create leading directories as needed. Signed-off-by: Junio C Hamano --- builtin-pack-objects.c | 5 ++--- fast-import.c | 14 +++++--------- git-compat-util.h | 2 ++ index-pack.c | 23 ++++++++++++----------- pack-write.c | 6 ++---- t/t5300-pack-object.sh | 17 +++++++++++++++++ wrapper.c | 32 ++++++++++++++++++++++++++++++++ 7 files changed, 72 insertions(+), 27 deletions(-) (limited to 'wrapper.c') diff --git a/builtin-pack-objects.c b/builtin-pack-objects.c index fb5e14d56e..7518d536c3 100644 --- a/builtin-pack-objects.c +++ b/builtin-pack-objects.c @@ -473,9 +473,8 @@ static void write_pack_file(void) } else { char tmpname[PATH_MAX]; int fd; - snprintf(tmpname, sizeof(tmpname), - "%s/pack/tmp_pack_XXXXXX", get_object_directory()); - fd = xmkstemp(tmpname); + fd = odb_mkstemp(tmpname, sizeof(tmpname), + "pack/tmp_pack_XXXXXX"); pack_tmp_name = xstrdup(tmpname); f = sha1fd(fd, pack_tmp_name); } diff --git a/fast-import.c b/fast-import.c index d58cca58e5..f0114948ec 100644 --- a/fast-import.c +++ b/fast-import.c @@ -815,9 +815,8 @@ static void start_packfile(void) struct pack_header hdr; int pack_fd; - snprintf(tmpfile, sizeof(tmpfile), - "%s/pack/tmp_pack_XXXXXX", get_object_directory()); - pack_fd = xmkstemp(tmpfile); + pack_fd = odb_mkstemp(tmpfile, sizeof(tmpfile), + "pack/tmp_pack_XXXXXX"); p = xcalloc(1, sizeof(*p) + strlen(tmpfile) + 2); strcpy(p->pack_name, tmpfile); p->pack_fd = pack_fd; @@ -877,9 +876,8 @@ static char *create_index(void) c = next; } - snprintf(tmpfile, sizeof(tmpfile), - "%s/pack/tmp_idx_XXXXXX", get_object_directory()); - idx_fd = xmkstemp(tmpfile); + idx_fd = odb_mkstemp(tmpfile, sizeof(tmpfile), + "pack/tmp_idx_XXXXXX"); f = sha1fd(idx_fd, tmpfile); sha1write(f, array, 256 * sizeof(int)); SHA1_Init(&ctx); @@ -905,9 +903,7 @@ static char *keep_pack(char *curr_index_name) chmod(pack_data->pack_name, 0444); chmod(curr_index_name, 0444); - snprintf(name, sizeof(name), "%s/pack/pack-%s.keep", - get_object_directory(), sha1_to_hex(pack_data->sha1)); - keep_fd = open(name, O_RDWR|O_CREAT|O_EXCL, 0600); + keep_fd = odb_pack_keep(name, sizeof(name), pack_data->sha1); if (keep_fd < 0) die("cannot create keep file"); write_or_die(keep_fd, keep_msg, strlen(keep_msg)); diff --git a/git-compat-util.h b/git-compat-util.h index cf89cdf459..758a880862 100644 --- a/git-compat-util.h +++ b/git-compat-util.h @@ -294,6 +294,8 @@ extern ssize_t xwrite(int fd, const void *buf, size_t len); extern int xdup(int fd); extern FILE *xfdopen(int fd, const char *mode); extern int xmkstemp(char *template); +extern int odb_mkstemp(char *template, size_t limit, const char *pattern); +extern int odb_pack_keep(char *name, size_t namesz, unsigned char *sha1); static inline size_t xsize_t(off_t len) { diff --git a/index-pack.c b/index-pack.c index c99a1a152c..745ac0bfa0 100644 --- a/index-pack.c +++ b/index-pack.c @@ -171,9 +171,8 @@ static char *open_pack_file(char *pack_name) input_fd = 0; if (!pack_name) { static char tmpfile[PATH_MAX]; - snprintf(tmpfile, sizeof(tmpfile), - "%s/pack/tmp_pack_XXXXXX", get_object_directory()); - output_fd = xmkstemp(tmpfile); + output_fd = odb_mkstemp(tmpfile, sizeof(tmpfile), + "pack/tmp_pack_XXXXXX"); pack_name = xstrdup(tmpfile); } else output_fd = open(pack_name, O_CREAT|O_EXCL|O_RDWR, 0600); @@ -795,22 +794,24 @@ static void final(const char *final_pack_name, const char *curr_pack_name, if (keep_msg) { int keep_fd, keep_msg_len = strlen(keep_msg); - if (!keep_name) { - snprintf(name, sizeof(name), "%s/pack/pack-%s.keep", - get_object_directory(), sha1_to_hex(sha1)); - keep_name = name; - } - keep_fd = open(keep_name, O_RDWR|O_CREAT|O_EXCL, 0600); + + if (!keep_name) + keep_fd = odb_pack_keep(name, sizeof(name), sha1); + else + keep_fd = open(keep_name, O_RDWR|O_CREAT|O_EXCL, 0600); + if (keep_fd < 0) { if (errno != EEXIST) - die("cannot write keep file"); + die("cannot write keep file '%s' (%s)", + keep_name, strerror(errno)); } else { if (keep_msg_len > 0) { write_or_die(keep_fd, keep_msg, keep_msg_len); write_or_die(keep_fd, "\n", 1); } if (close(keep_fd) != 0) - die("cannot write keep file"); + die("cannot close written keep file '%s' (%s)", + keep_name, strerror(errno)); report = "keep"; } } diff --git a/pack-write.c b/pack-write.c index 3621f1dd32..e82c025457 100644 --- a/pack-write.c +++ b/pack-write.c @@ -44,9 +44,7 @@ char *write_idx_file(char *index_name, struct pack_idx_entry **objects, if (!index_name) { static char tmpfile[PATH_MAX]; - snprintf(tmpfile, sizeof(tmpfile), - "%s/pack/tmp_idx_XXXXXX", get_object_directory()); - fd = xmkstemp(tmpfile); + fd = odb_mkstemp(tmpfile, sizeof(tmpfile), "pack/tmp_idx_XXXXXX"); index_name = xstrdup(tmpfile); } else { unlink(index_name); @@ -239,7 +237,7 @@ char *index_pack_lockfile(int ip_out) char packname[46]; /* - * The first thing we expects from index-pack's output + * The first thing we expect from index-pack's output * is "pack\t%40s\n" or "keep\t%40s\n" (46 bytes) where * %40s is the newly created pack SHA1 name. In the "keep" * case, we need it to remove the corresponding .keep file diff --git a/t/t5300-pack-object.sh b/t/t5300-pack-object.sh index 2852a03265..73d871c713 100755 --- a/t/t5300-pack-object.sh +++ b/t/t5300-pack-object.sh @@ -180,6 +180,23 @@ test_expect_success \ unset GIT_OBJECT_DIRECTORY +test_expect_success 'survive missing objects/pack directory' ' + ( + rm -fr missing-pack && + mkdir missing-pack && + cd missing-pack && + git init && + GOP=.git/objects/pack + rm -fr $GOP && + git index-pack --stdin --keep=test <../test-3-${packname_3}.pack && + test -f $GOP/pack-${packname_3}.pack && + test_cmp $GOP/pack-${packname_3}.pack ../test-3-${packname_3}.pack && + test -f $GOP/pack-${packname_3}.idx && + test_cmp $GOP/pack-${packname_3}.idx ../test-3-${packname_3}.idx && + test -f $GOP/pack-${packname_3}.keep + ) +' + test_expect_success \ 'verify pack' \ 'git verify-pack test-1-${packname_1}.idx \ diff --git a/wrapper.c b/wrapper.c index 93562f03ee..231a58f1a9 100644 --- a/wrapper.c +++ b/wrapper.c @@ -196,3 +196,35 @@ int xmkstemp(char *template) die("Unable to create temporary file: %s", strerror(errno)); return fd; } + +int odb_mkstemp(char *template, size_t limit, const char *pattern) +{ + int fd; + + snprintf(template, limit, "%s/%s", + get_object_directory(), pattern); + fd = mkstemp(template); + if (0 <= fd) + return fd; + + /* slow path */ + safe_create_leading_directories(template); + snprintf(template, limit, "%s/%s", + get_object_directory(), pattern); + return xmkstemp(template); +} + +int odb_pack_keep(char *name, size_t namesz, unsigned char *sha1) +{ + int fd; + + snprintf(name, namesz, "%s/pack/pack-%s.keep", + get_object_directory(), sha1_to_hex(sha1)); + fd = open(name, O_RDWR|O_CREAT|O_EXCL, 0600); + if (0 <= fd) + return fd; + + /* slow path */ + safe_create_leading_directories(name); + return open(name, O_RDWR|O_CREAT|O_EXCL, 0600); +} -- cgit v1.3-5-g9baa From 2c626e5fa8a46f647b88fb32d7b28d573e8631bf Mon Sep 17 00:00:00 2001 From: Mike Ralphson Date: Thu, 26 Feb 2009 16:31:52 +0100 Subject: Fix odb_mkstemp() on AIX The AIX mkstemp() modifies its template parameter to an empty string if the call fails. The existing code had already recomputed the template, but too late to be good. See also 6ff6af62, which fixed this problem in a different spot. Signed-off-by: Mike Ralphson Signed-off-by: Johannes Sixt Signed-off-by: Junio C Hamano --- wrapper.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'wrapper.c') diff --git a/wrapper.c b/wrapper.c index 231a58f1a9..5e9de294d5 100644 --- a/wrapper.c +++ b/wrapper.c @@ -208,9 +208,10 @@ int odb_mkstemp(char *template, size_t limit, const char *pattern) return fd; /* slow path */ - safe_create_leading_directories(template); + /* some mkstemp implementations erase template on failure */ snprintf(template, limit, "%s/%s", get_object_directory(), pattern); + safe_create_leading_directories(template); return xmkstemp(template); } -- cgit v1.3-5-g9baa From fc71db39e0d75e8a403f36f3fecf4450886cd165 Mon Sep 17 00:00:00 2001 From: Alex Riesen Date: Wed, 29 Apr 2009 23:21:46 +0200 Subject: Introduce an unlink(2) wrapper which gives warning if unlink failed This seem to be a very common pattern in the current code. The function prints a generic removal failure message, the file name which failed and readable errno presentation. The function preserves errno and always returns the value unlink(2) returned, but prints no message for ENOENT, as it was the most often filtered out in the code calling unlink. Besides, removing a file is anyway the purpose of calling unlink. Signed-off-by: Alex Riesen Signed-off-by: Junio C Hamano --- git-compat-util.h | 6 ++++++ wrapper.c | 16 ++++++++++++++++ 2 files changed, 22 insertions(+) (limited to 'wrapper.c') diff --git a/git-compat-util.h b/git-compat-util.h index 1ac16bde5a..c7cf2d5d9c 100644 --- a/git-compat-util.h +++ b/git-compat-util.h @@ -415,4 +415,10 @@ void git_qsort(void *base, size_t nmemb, size_t size, #define fstat_is_reliable() 1 #endif +/* + * Preserves errno, prints a message, but gives no warning for ENOENT. + * Always returns the return value of unlink(2). + */ +int unlink_or_warn(const char *path); + #endif diff --git a/wrapper.c b/wrapper.c index d8efb1365a..7eb3218ee9 100644 --- a/wrapper.c +++ b/wrapper.c @@ -289,3 +289,19 @@ int odb_pack_keep(char *name, size_t namesz, unsigned char *sha1) safe_create_leading_directories(name); return open(name, O_RDWR|O_CREAT|O_EXCL, 0600); } + +int unlink_or_warn(const char *file) +{ + int rc = unlink(file); + + if (rc < 0) { + int err = errno; + if (ENOENT != err) { + warning("unable to unlink %s: %s", + file, strerror(errno)); + errno = err; + } + } + return rc; +} + -- cgit v1.3-5-g9baa From d824cbba02a4061400a0e382f9bd241fbbff34f0 Mon Sep 17 00:00:00 2001 From: Thomas Rast Date: Sat, 27 Jun 2009 17:58:46 +0200 Subject: Convert existing die(..., strerror(errno)) to die_errno() Change calls to die(..., strerror(errno)) to use the new die_errno(). In the process, also make slight style adjustments: at least state _something_ about the function that failed (instead of just printing the pathname), and put paths in single quotes. Signed-off-by: Thomas Rast Signed-off-by: Junio C Hamano --- bisect.c | 5 ++--- branch.c | 4 ++-- builtin-apply.c | 6 +++--- builtin-blame.c | 7 +++---- builtin-clone.c | 11 +++++------ builtin-commit-tree.c | 2 +- builtin-commit.c | 23 ++++++++++------------- builtin-config.c | 4 ++-- builtin-diff.c | 2 +- builtin-fast-export.c | 2 +- builtin-fetch--tool.c | 2 +- builtin-fmt-merge-msg.c | 3 +-- builtin-fsck.c | 8 ++++---- builtin-grep.c | 2 +- builtin-merge.c | 8 ++++---- builtin-mv.c | 2 +- builtin-pack-objects.c | 14 +++++--------- builtin-rm.c | 2 +- builtin-send-pack.c | 2 +- builtin-tag.c | 7 +++---- builtin-unpack-objects.c | 2 +- csum-file.c | 5 ++--- daemon.c | 15 +++++++-------- diff.c | 4 ++-- dir.c | 2 +- entry.c | 8 ++++---- fast-import.c | 4 ++-- git.c | 6 +++--- index-pack.c | 21 ++++++++++----------- merge-recursive.c | 6 +++--- pack-refs.c | 7 +++---- pack-write.c | 10 +++++----- pkt-line.c | 4 ++-- read-cache.c | 6 +++--- refs.c | 2 +- run-command.c | 4 ++-- setup.c | 8 ++++---- sha1_file.c | 2 +- shell.c | 2 +- test-sha1.c | 2 +- wrapper.c | 8 ++++---- write_or_die.c | 6 +++--- 42 files changed, 117 insertions(+), 133 deletions(-) (limited to 'wrapper.c') diff --git a/bisect.c b/bisect.c index c43c120bde..281e16ad19 100644 --- a/bisect.c +++ b/bisect.c @@ -461,7 +461,7 @@ void read_bisect_paths(struct argv_array *array) FILE *fp = fopen(filename, "r"); if (!fp) - die("Could not open file '%s': %s", filename, strerror(errno)); + die_errno("Could not open file '%s'", filename); while (strbuf_getline(&str, fp, '\n') != EOF) { char *quoted; @@ -632,8 +632,7 @@ static void mark_expected_rev(char *bisect_rev_hex) int fd = open(filename, O_CREAT | O_TRUNC | O_WRONLY, 0600); if (fd < 0) - die("could not create file '%s': %s", - filename, strerror(errno)); + die_errno("could not create file '%s'", filename); bisect_rev_hex[len] = '\n'; write_or_die(fd, bisect_rev_hex, len + 1); diff --git a/branch.c b/branch.c index 62030af4b5..05ef3f5c9c 100644 --- a/branch.c +++ b/branch.c @@ -172,7 +172,7 @@ void create_branch(const char *head, lock = lock_any_ref_for_update(ref.buf, NULL, 0); if (!lock) - die("Failed to lock ref for update: %s.", strerror(errno)); + die_errno("Failed to lock ref for update"); if (reflog) log_all_ref_updates = 1; @@ -188,7 +188,7 @@ void create_branch(const char *head, setup_tracking(name, real_ref, track); if (write_ref_sha1(lock, sha1, msg) < 0) - die("Failed to write ref: %s.", strerror(errno)); + die_errno("Failed to write ref"); strbuf_release(&ref); free(real_ref); diff --git a/builtin-apply.c b/builtin-apply.c index 94ba2bdd5b..6526c087b9 100644 --- a/builtin-apply.c +++ b/builtin-apply.c @@ -280,7 +280,7 @@ static void say_patch_name(FILE *output, const char *pre, static void read_patch_file(struct strbuf *sb, int fd) { if (strbuf_read(sb, fd, 0) < 0) - die("git apply: read returned %s", strerror(errno)); + die_errno("git apply: failed to read"); /* * Make sure that we have some slop in the buffer @@ -2864,7 +2864,7 @@ static int try_create_file(const char *path, unsigned int mode, const char *buf, strbuf_release(&nbuf); if (close(fd) < 0) - die("closing file %s: %s", path, strerror(errno)); + die_errno("closing file '%s'", path); return 0; } @@ -3354,7 +3354,7 @@ int cmd_apply(int argc, const char **argv, const char *unused_prefix) fd = open(arg, O_RDONLY); if (fd < 0) - die("can't open patch '%s': %s", arg, strerror(errno)); + die_errno("can't open patch '%s'", arg); read_stdin = 0; set_default_whitespace_mode(whitespace_option); errs |= apply_patch(fd, arg, options); diff --git a/builtin-blame.c b/builtin-blame.c index 0c2d29a430..7d8fbd5919 100644 --- a/builtin-blame.c +++ b/builtin-blame.c @@ -2035,7 +2035,7 @@ static struct commit *fake_working_tree_commit(const char *path, const char *con contents_from = "standard input"; mode = 0; if (strbuf_read(&buf, 0, 0) < 0) - die("read error %s from stdin", strerror(errno)); + die_errno("failed to read from stdin"); } convert_to_git(path, buf.buf, buf.len, &buf, 0); origin->file.ptr = buf.buf; @@ -2261,8 +2261,7 @@ parse_done: argc = parse_options_end(&ctx); if (revs_file && read_ancestry(revs_file)) - die("reading graft file %s failed: %s", - revs_file, strerror(errno)); + die_errno("reading graft file '%s' failed", revs_file); if (cmd_is_annotate) { output_option |= OUTPUT_ANNOTATE_COMPAT; @@ -2350,7 +2349,7 @@ parse_done: setup_work_tree(); if (!has_string_in_work_tree(path)) - die("cannot stat path %s: %s", path, strerror(errno)); + die_errno("cannot stat path '%s'", path); } setup_revisions(argc, argv, &revs, NULL); diff --git a/builtin-clone.c b/builtin-clone.c index 5c46496a43..5f34414ff7 100644 --- a/builtin-clone.c +++ b/builtin-clone.c @@ -252,8 +252,7 @@ static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest) } if (unlink(dest->buf) && errno != ENOENT) - die("failed to unlink %s: %s", - dest->buf, strerror(errno)); + die_errno("failed to unlink '%s'", dest->buf); if (!option_no_hardlinks) { if (!link(src->buf, dest->buf)) continue; @@ -420,11 +419,11 @@ int cmd_clone(int argc, const char **argv, const char *prefix) if (!option_bare) { junk_work_tree = work_tree; if (safe_create_leading_directories_const(work_tree) < 0) - die("could not create leading directories of '%s': %s", - work_tree, strerror(errno)); + die_errno("could not create leading directories of '%s'", + work_tree); if (!dest_exists && mkdir(work_tree, 0755)) - die("could not create work tree dir '%s': %s.", - work_tree, strerror(errno)); + die_errno("could not create work tree dir '%s'.", + work_tree); set_git_work_tree(work_tree); } junk_git_dir = git_dir; diff --git a/builtin-commit-tree.c b/builtin-commit-tree.c index 0453425c47..6467077731 100644 --- a/builtin-commit-tree.c +++ b/builtin-commit-tree.c @@ -124,7 +124,7 @@ int cmd_commit_tree(int argc, const char **argv, const char *prefix) } if (strbuf_read(&buffer, 0, 0) < 0) - die("git commit-tree: read returned %s", strerror(errno)); + die_errno("git commit-tree: failed to read"); if (!commit_tree(buffer.buf, tree_sha1, parents, commit_sha1, NULL)) { printf("%s\n", sha1_to_hex(commit_sha1)); diff --git a/builtin-commit.c b/builtin-commit.c index 41e222d267..88c51bdd3a 100644 --- a/builtin-commit.c +++ b/builtin-commit.c @@ -438,8 +438,8 @@ static int prepare_to_commit(const char *index_file, const char *prefix) hook_arg1 = "message"; } else if (logfile) { if (strbuf_read_file(&sb, logfile, 0) < 0) - die("could not read log file '%s': %s", - logfile, strerror(errno)); + die_errno("could not read log file '%s'", + logfile); hook_arg1 = "message"; } else if (use_message) { buffer = strstr(use_message_buffer, "\n\n"); @@ -450,16 +450,15 @@ static int prepare_to_commit(const char *index_file, const char *prefix) hook_arg2 = use_message; } else if (!stat(git_path("MERGE_MSG"), &statbuf)) { if (strbuf_read_file(&sb, git_path("MERGE_MSG"), 0) < 0) - die("could not read MERGE_MSG: %s", strerror(errno)); + die_errno("could not read MERGE_MSG"); hook_arg1 = "merge"; } else if (!stat(git_path("SQUASH_MSG"), &statbuf)) { if (strbuf_read_file(&sb, git_path("SQUASH_MSG"), 0) < 0) - die("could not read SQUASH_MSG: %s", strerror(errno)); + die_errno("could not read SQUASH_MSG"); hook_arg1 = "squash"; } else if (template_file && !stat(template_file, &statbuf)) { if (strbuf_read_file(&sb, template_file, 0) < 0) - die("could not read %s: %s", - template_file, strerror(errno)); + die_errno("could not read '%s'", template_file); hook_arg1 = "template"; } @@ -472,8 +471,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix) fp = fopen(git_path(commit_editmsg), "w"); if (fp == NULL) - die("could not open %s: %s", - git_path(commit_editmsg), strerror(errno)); + die_errno("could not open '%s'", git_path(commit_editmsg)); if (cleanup_mode != CLEANUP_NONE) stripspace(&sb, 0); @@ -497,7 +495,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix) } if (fwrite(sb.buf, 1, sb.len, fp) < sb.len) - die("could not write commit template: %s", strerror(errno)); + die_errno("could not write commit template"); strbuf_release(&sb); @@ -940,8 +938,8 @@ int cmd_commit(int argc, const char **argv, const char *prefix) pptr = &commit_list_insert(lookup_commit(head_sha1), pptr)->next; fp = fopen(git_path("MERGE_HEAD"), "r"); if (fp == NULL) - die("could not open %s for reading: %s", - git_path("MERGE_HEAD"), strerror(errno)); + die_errno("could not open '%s' for reading", + git_path("MERGE_HEAD")); while (strbuf_getline(&m, fp, '\n') != EOF) { unsigned char sha1[20]; if (get_sha1_hex(m.buf, sha1) < 0) @@ -952,8 +950,7 @@ int cmd_commit(int argc, const char **argv, const char *prefix) strbuf_release(&m); if (!stat(git_path("MERGE_MODE"), &statbuf)) { if (strbuf_read_file(&sb, git_path("MERGE_MODE"), 0) < 0) - die("could not read MERGE_MODE: %s", - strerror(errno)); + die_errno("could not read MERGE_MODE"); if (!strcmp(sb.buf, "no-ff")) allow_fast_forward = 0; } diff --git a/builtin-config.c b/builtin-config.c index 60915f91ca..a2d656edb3 100644 --- a/builtin-config.c +++ b/builtin-config.c @@ -383,8 +383,8 @@ int cmd_config(int argc, const char **argv, const char *unused_prefix) check_argc(argc, 0, 0); if (git_config(show_all_config, NULL) < 0) { if (config_exclusive_filename) - die("unable to read config file %s: %s", - config_exclusive_filename, strerror(errno)); + die_errno("unable to read config file '%s'", + config_exclusive_filename); else die("error processing config file(s)"); } diff --git a/builtin-diff.c b/builtin-diff.c index d75d69bf57..2e51f408f9 100644 --- a/builtin-diff.c +++ b/builtin-diff.c @@ -70,7 +70,7 @@ static int builtin_diff_b_f(struct rev_info *revs, usage(builtin_diff_usage); if (lstat(path, &st)) - die("'%s': %s", path, strerror(errno)); + die_errno("failed to stat '%s'", path); if (!(S_ISREG(st.st_mode) || S_ISLNK(st.st_mode))) die("'%s': not a regular file or symlink", path); diff --git a/builtin-fast-export.c b/builtin-fast-export.c index 6cef810312..333d43894a 100644 --- a/builtin-fast-export.c +++ b/builtin-fast-export.c @@ -451,7 +451,7 @@ static void import_marks(char *input_file) char line[512]; FILE *f = fopen(input_file, "r"); if (!f) - die("cannot read %s: %s", input_file, strerror(errno)); + die_errno("cannot read '%s'", input_file); while (fgets(line, sizeof(line), f)) { uint32_t mark; diff --git a/builtin-fetch--tool.c b/builtin-fetch--tool.c index 29356d25db..3dbdf7a288 100644 --- a/builtin-fetch--tool.c +++ b/builtin-fetch--tool.c @@ -8,7 +8,7 @@ static char *get_stdin(void) { struct strbuf buf = STRBUF_INIT; if (strbuf_read(&buf, 0, 1024) < 0) { - die("error reading standard input: %s", strerror(errno)); + die_errno("error reading standard input"); } return strbuf_detach(&buf, NULL); } diff --git a/builtin-fmt-merge-msg.c b/builtin-fmt-merge-msg.c index fbf9582e66..1248d5e3a3 100644 --- a/builtin-fmt-merge-msg.c +++ b/builtin-fmt-merge-msg.c @@ -372,8 +372,7 @@ int cmd_fmt_merge_msg(int argc, const char **argv, const char *prefix) } if (strbuf_read(&input, fileno(in), 0) < 0) - die("could not read input file %s", strerror(errno)); - + die_errno("could not read input file"); ret = fmt_merge_msg(merge_summary, &input, &output); if (ret) return ret; diff --git a/builtin-fsck.c b/builtin-fsck.c index 7da706cac3..a49dbe14c7 100644 --- a/builtin-fsck.c +++ b/builtin-fsck.c @@ -225,15 +225,15 @@ static void check_unreachable_object(struct object *obj) &type, &size); if (buf) { if (fwrite(buf, size, 1, f) != 1) - die("Could not write %s: %s", - filename, strerror(errno)); + die_errno("Could not write '%s'", + filename); free(buf); } } else fprintf(f, "%s\n", sha1_to_hex(obj->sha1)); if (fclose(f)) - die("Could not finish %s: %s", - filename, strerror(errno)); + die_errno("Could not finish '%s'", + filename); } return; } diff --git a/builtin-grep.c b/builtin-grep.c index 73fc922c49..e5583686a2 100644 --- a/builtin-grep.c +++ b/builtin-grep.c @@ -594,7 +594,7 @@ static int file_callback(const struct option *opt, const char *arg, int unset) patterns = fopen(arg, "r"); if (!patterns) - die("'%s': %s", arg, strerror(errno)); + die_errno("cannot open '%s'", arg); while (strbuf_getline(&sb, patterns, '\n') == 0) { /* ignore empty line like grep does */ if (sb.len == 0) diff --git a/builtin-merge.c b/builtin-merge.c index 8d101eff0b..436263bc19 100644 --- a/builtin-merge.c +++ b/builtin-merge.c @@ -294,9 +294,9 @@ static void squash_message(void) NULL, NULL, rev.date_mode, 0); } if (write(fd, out.buf, out.len) < 0) - die("Writing SQUASH_MSG: %s", strerror(errno)); + die_errno("Writing SQUASH_MSG"); if (close(fd)) - die("Finishing SQUASH_MSG: %s", strerror(errno)); + die_errno("Finishing SQUASH_MSG"); strbuf_release(&out); } @@ -428,8 +428,8 @@ static void merge_name(const char *remote, struct strbuf *msg) fp = fopen(git_path("FETCH_HEAD"), "r"); if (!fp) - die("could not open %s for reading: %s", - git_path("FETCH_HEAD"), strerror(errno)); + die_errno("could not open '%s' for reading", + git_path("FETCH_HEAD")); strbuf_getline(&line, fp, '\n'); fclose(fp); ptr = strstr(line.buf, "\tnot-for-merge\t"); diff --git a/builtin-mv.c b/builtin-mv.c index 8b81d4b51d..024dfebf7e 100644 --- a/builtin-mv.c +++ b/builtin-mv.c @@ -209,7 +209,7 @@ int cmd_mv(int argc, const char **argv, const char *prefix) printf("Renaming %s to %s\n", src, dst); if (!show_only && mode != INDEX && rename(src, dst) < 0 && !ignore_errors) - die ("renaming %s failed: %s", src, strerror(errno)); + die_errno ("renaming '%s' failed", src); if (mode == WORKING_DIRECTORY) continue; diff --git a/builtin-pack-objects.c b/builtin-pack-objects.c index 9742b45c4d..60355d41fd 100644 --- a/builtin-pack-objects.c +++ b/builtin-pack-objects.c @@ -536,11 +536,9 @@ static void write_pack_file(void) base_name, sha1_to_hex(sha1)); free_pack_by_name(tmpname); if (adjust_perm(pack_tmp_name, mode)) - die("unable to make temporary pack file readable: %s", - strerror(errno)); + die_errno("unable to make temporary pack file readable"); if (rename(pack_tmp_name, tmpname)) - die("unable to rename temporary pack file: %s", - strerror(errno)); + die_errno("unable to rename temporary pack file"); /* * Packs are runtime accessed in their mtime @@ -566,11 +564,9 @@ static void write_pack_file(void) snprintf(tmpname, sizeof(tmpname), "%s-%s.idx", base_name, sha1_to_hex(sha1)); if (adjust_perm(idx_tmp_name, mode)) - die("unable to make temporary index file readable: %s", - strerror(errno)); + die_errno("unable to make temporary index file readable"); if (rename(idx_tmp_name, tmpname)) - die("unable to rename temporary index file: %s", - strerror(errno)); + die_errno("unable to rename temporary index file"); free(idx_tmp_name); free(pack_tmp_name); @@ -1880,7 +1876,7 @@ static void read_object_list_from_stdin(void) if (!ferror(stdin)) die("fgets returned NULL, not EOF, not error!"); if (errno != EINTR) - die("fgets: %s", strerror(errno)); + die_errno("fgets"); clearerr(stdin); continue; } diff --git a/builtin-rm.c b/builtin-rm.c index 0cc4912718..57975dbcfd 100644 --- a/builtin-rm.c +++ b/builtin-rm.c @@ -257,7 +257,7 @@ int cmd_rm(int argc, const char **argv, const char *prefix) continue; } if (!removed) - die("git rm: %s: %s", path, strerror(errno)); + die_errno("git rm: '%s'", path); } } diff --git a/builtin-send-pack.c b/builtin-send-pack.c index be3b0926de..8fe5ab90b6 100644 --- a/builtin-send-pack.c +++ b/builtin-send-pack.c @@ -59,7 +59,7 @@ static int pack_objects(int fd, struct ref *refs, struct extra_have_objects *ext po.out = fd; po.git_cmd = 1; if (start_command(&po)) - die("git pack-objects failed (%s)", strerror(errno)); + die_errno("git pack-objects failed"); /* * We feed the pack-objects we just spawned with revision diff --git a/builtin-tag.c b/builtin-tag.c index dc3db62811..7b51095c80 100644 --- a/builtin-tag.c +++ b/builtin-tag.c @@ -308,8 +308,7 @@ static void create_tag(const unsigned char *object, const char *tag, path = git_pathdup("TAG_EDITMSG"); fd = open(path, O_CREAT | O_TRUNC | O_WRONLY, 0600); if (fd < 0) - die("could not create file '%s': %s", - path, strerror(errno)); + die_errno("could not create file '%s'", path); if (!is_null_sha1(prev)) write_tag_body(fd, prev); @@ -446,8 +445,8 @@ int cmd_tag(int argc, const char **argv, const char *prefix) die("cannot read %s", msgfile); } else { if (strbuf_read_file(&buf, msgfile, 1024) < 0) - die("could not open or read '%s': %s", - msgfile, strerror(errno)); + die_errno("could not open or read '%s'", + msgfile); } } } diff --git a/builtin-unpack-objects.c b/builtin-unpack-objects.c index 9a773239ca..41e9ac526c 100644 --- a/builtin-unpack-objects.c +++ b/builtin-unpack-objects.c @@ -68,7 +68,7 @@ static void *fill(int min) if (ret <= 0) { if (!ret) die("early EOF"); - die("read error on input: %s", strerror(errno)); + die_errno("read error on input"); } len += ret; } while (len < min); diff --git a/csum-file.c b/csum-file.c index 2ddb12a0b7..4d50cc5ce1 100644 --- a/csum-file.c +++ b/csum-file.c @@ -26,7 +26,7 @@ static void flush(struct sha1file *f, void * buf, unsigned int count) } if (!ret) die("sha1 file '%s' write error. Out of diskspace", f->name); - die("sha1 file '%s' write error (%s)", f->name, strerror(errno)); + die_errno("sha1 file '%s' write error", f->name); } } @@ -55,8 +55,7 @@ int sha1close(struct sha1file *f, unsigned char *result, unsigned int flags) if (flags & CSUM_FSYNC) fsync_or_die(f->fd, f->name); if (close(f->fd)) - die("%s: sha1 file error on close (%s)", - f->name, strerror(errno)); + die_errno("%s: sha1 file error on close", f->name); fd = 0; } else fd = f->fd; diff --git a/daemon.c b/daemon.c index b2babcc076..0c2f32635a 100644 --- a/daemon.c +++ b/daemon.c @@ -862,7 +862,7 @@ static int service_loop(int socknum, int *socklist) case ECONNABORTED: continue; default: - die("accept returned %s", strerror(errno)); + die_errno("accept returned"); } } handle(incoming, (struct sockaddr *)&ss, sslen); @@ -878,7 +878,7 @@ static void sanitize_stdfds(void) while (fd != -1 && fd < 2) fd = dup(fd); if (fd == -1) - die("open /dev/null or dup failed: %s", strerror(errno)); + die_errno("open /dev/null or dup failed"); if (fd > 2) close(fd); } @@ -889,12 +889,12 @@ static void daemonize(void) case 0: break; case -1: - die("fork failed: %s", strerror(errno)); + die_errno("fork failed"); default: exit(0); } if (setsid() == -1) - die("setsid failed: %s", strerror(errno)); + die_errno("setsid failed"); close(0); close(1); close(2); @@ -905,9 +905,9 @@ static void store_pid(const char *path) { FILE *f = fopen(path, "w"); if (!f) - die("cannot open pid file %s: %s", path, strerror(errno)); + die_errno("cannot open pid file '%s'", path); if (fprintf(f, "%"PRIuMAX"\n", (uintmax_t) getpid()) < 0 || fclose(f) != 0) - die("failed to write pid file %s: %s", path, strerror(errno)); + die_errno("failed to write pid file '%s'", path); } static int serve(char *listen_addr, int listen_port, struct passwd *pass, gid_t gid) @@ -1107,8 +1107,7 @@ int main(int argc, char **argv) socklen_t slen = sizeof(ss); if (!freopen("/dev/null", "w", stderr)) - die("failed to redirect stderr to /dev/null: %s", - strerror(errno)); + die_errno("failed to redirect stderr to /dev/null"); if (getpeername(0, peer, &slen)) peer = NULL; diff --git a/diff.c b/diff.c index 4d0a5b9ae6..48043f5bdb 100644 --- a/diff.c +++ b/diff.c @@ -1975,7 +1975,7 @@ static void prep_temp_blob(const char *path, struct diff_tempfile *temp, fd = git_mkstemps(temp->tmp_path, PATH_MAX, template.buf, strlen(base) + 1); if (fd < 0) - die("unable to create temp-file: %s", strerror(errno)); + die_errno("unable to create temp-file"); if (convert_to_working_tree(path, (const char *)blob, (size_t)size, &buf)) { blob = buf.buf; @@ -2021,7 +2021,7 @@ static struct diff_tempfile *prepare_temp_file(const char *name, if (lstat(name, &st) < 0) { if (errno == ENOENT) goto not_a_valid_file; - die("stat(%s): %s", name, strerror(errno)); + die_errno("stat(%s)", name); } if (S_ISLNK(st.st_mode)) { struct strbuf sb = STRBUF_INIT; diff --git a/dir.c b/dir.c index bbfcb566e6..74b3bbf6fd 100644 --- a/dir.c +++ b/dir.c @@ -759,7 +759,7 @@ char *get_relative_cwd(char *buffer, int size, const char *dir) if (!dir) return NULL; if (!getcwd(buffer, size)) - die("can't find the current directory: %s", strerror(errno)); + die_errno("can't find the current directory"); if (!is_absolute_path(dir)) dir = make_absolute_path(dir); diff --git a/entry.c b/entry.c index cc841edf90..8ec880bdbd 100644 --- a/entry.c +++ b/entry.c @@ -51,7 +51,7 @@ static void remove_subtree(const char *path) char *name; if (!dir) - die("cannot opendir %s (%s)", path, strerror(errno)); + die_errno("cannot opendir '%s'", path); strcpy(pathbuf, path); name = pathbuf + strlen(path); *name++ = '/'; @@ -61,15 +61,15 @@ static void remove_subtree(const char *path) continue; strcpy(name, de->d_name); if (lstat(pathbuf, &st)) - die("cannot lstat %s (%s)", pathbuf, strerror(errno)); + die_errno("cannot lstat '%s'", pathbuf); if (S_ISDIR(st.st_mode)) remove_subtree(pathbuf); else if (unlink(pathbuf)) - die("cannot unlink %s (%s)", pathbuf, strerror(errno)); + die_errno("cannot unlink '%s'", pathbuf); } closedir(dir); if (rmdir(path)) - die("cannot rmdir %s (%s)", path, strerror(errno)); + die_errno("cannot rmdir '%s'", path); } static int create_file(const char *path, unsigned int mode) diff --git a/fast-import.c b/fast-import.c index a2a24588a9..d31a4e8217 100644 --- a/fast-import.c +++ b/fast-import.c @@ -2342,7 +2342,7 @@ static void import_marks(const char *input_file) char line[512]; FILE *f = fopen(input_file, "r"); if (!f) - die("cannot read %s: %s", input_file, strerror(errno)); + die_errno("cannot read '%s'", input_file); while (fgets(line, sizeof(line), f)) { uintmax_t mark; char *end; @@ -2448,7 +2448,7 @@ int main(int argc, const char **argv) fclose(pack_edges); pack_edges = fopen(a + 20, "a"); if (!pack_edges) - die("Cannot open %s: %s", a + 20, strerror(errno)); + die_errno("Cannot open '%s'", a + 20); } else if (!strcmp(a, "--force")) force_update = 1; else if (!strcmp(a, "--quiet")) diff --git a/git.c b/git.c index 7d7f949f0d..b035676e93 100644 --- a/git.c +++ b/git.c @@ -200,7 +200,7 @@ static int handle_alias(int *argcp, const char ***argv) } if (subdir && chdir(subdir)) - die("Cannot change to %s: %s", subdir, strerror(errno)); + die_errno("Cannot change to '%s'", subdir); errno = saved_errno; @@ -257,11 +257,11 @@ static int run_builtin(struct cmd_struct *p, int argc, const char **argv) /* Check for ENOSPC and EIO errors.. */ if (fflush(stdout)) - die("write failure on standard output: %s", strerror(errno)); + die_errno("write failure on standard output"); if (ferror(stdout)) die("unknown write failure on standard output"); if (fclose(stdout)) - die("close failed on standard output: %s", strerror(errno)); + die_errno("close failed on standard output"); return 0; } diff --git a/index-pack.c b/index-pack.c index 6e93ee6af6..cf6446fc43 100644 --- a/index-pack.c +++ b/index-pack.c @@ -143,7 +143,7 @@ static void *fill(int min) if (ret <= 0) { if (!ret) die("early EOF"); - die("read error on input: %s", strerror(errno)); + die_errno("read error on input"); } input_len += ret; if (from_stdin) @@ -178,13 +178,12 @@ static char *open_pack_file(char *pack_name) } else output_fd = open(pack_name, O_CREAT|O_EXCL|O_RDWR, 0600); if (output_fd < 0) - die("unable to create %s: %s", pack_name, strerror(errno)); + die_errno("unable to create '%s'", pack_name); pack_fd = output_fd; } else { input_fd = open(pack_name, O_RDONLY); if (input_fd < 0) - die("cannot open packfile '%s': %s", - pack_name, strerror(errno)); + die_errno("cannot open packfile '%s'", pack_name); output_fd = -1; pack_fd = input_fd; } @@ -370,7 +369,7 @@ static void *get_data_from_pack(struct object_entry *obj) do { ssize_t n = pread(pack_fd, data + rdy, len - rdy, from + rdy); if (n < 0) - die("cannot pread pack file: %s", strerror(errno)); + die_errno("cannot pread pack file"); if (!n) die("premature end of pack file, %lu bytes missing", len - rdy); @@ -631,7 +630,7 @@ static void parse_pack_objects(unsigned char *sha1) /* If input_fd is a file, we should have reached its end now. */ if (fstat(input_fd, &st)) - die("cannot fstat packfile: %s", strerror(errno)); + die_errno("cannot fstat packfile"); if (S_ISREG(st.st_mode) && lseek(input_fd, 0, SEEK_CUR) - input_len != st.st_size) die("pack has junk at the end"); @@ -788,7 +787,7 @@ static void final(const char *final_pack_name, const char *curr_pack_name, fsync_or_die(output_fd, curr_pack_name); err = close(output_fd); if (err) - die("error while closing pack file: %s", strerror(errno)); + die_errno("error while closing pack file"); } if (keep_msg) { @@ -801,16 +800,16 @@ static void final(const char *final_pack_name, const char *curr_pack_name, if (keep_fd < 0) { if (errno != EEXIST) - die("cannot write keep file '%s' (%s)", - keep_name, strerror(errno)); + die_errno("cannot write keep file '%s'", + keep_name); } else { if (keep_msg_len > 0) { write_or_die(keep_fd, keep_msg, keep_msg_len); write_or_die(keep_fd, "\n", 1); } if (close(keep_fd) != 0) - die("cannot close written keep file '%s' (%s)", - keep_name, strerror(errno)); + die_errno("cannot close written keep file '%s'", + keep_name); report = "keep"; } } diff --git a/merge-recursive.c b/merge-recursive.c index f5df9b961b..5d9140b8d6 100644 --- a/merge-recursive.c +++ b/merge-recursive.c @@ -438,7 +438,7 @@ static void flush_buffer(int fd, const char *buf, unsigned long size) /* Ignore epipe */ if (errno == EPIPE) break; - die("merge-recursive: %s", strerror(errno)); + die_errno("merge-recursive"); } else if (!ret) { die("merge-recursive: disk full?"); } @@ -554,7 +554,7 @@ static void update_file_flags(struct merge_options *o, mode = 0666; fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, mode); if (fd < 0) - die("failed to open %s: %s", path, strerror(errno)); + die_errno("failed to open '%s'", path); flush_buffer(fd, buf, size); close(fd); } else if (S_ISLNK(mode)) { @@ -562,7 +562,7 @@ static void update_file_flags(struct merge_options *o, safe_create_leading_directories_const(path); unlink(path); if (symlink(lnk, path)) - die("failed to symlink %s: %s", path, strerror(errno)); + die_errno("failed to symlink '%s'", path); free(lnk); } else die("do not know what to do with %06o %s '%s'", diff --git a/pack-refs.c b/pack-refs.c index 301fc60eae..7f43f8ac33 100644 --- a/pack-refs.c +++ b/pack-refs.c @@ -93,8 +93,7 @@ int pack_refs(unsigned int flags) LOCK_DIE_ON_ERROR); cbdata.refs_file = fdopen(fd, "w"); if (!cbdata.refs_file) - die("unable to create ref-pack file structure (%s)", - strerror(errno)); + die_errno("unable to create ref-pack file structure"); /* perhaps other traits later as well */ fprintf(cbdata.refs_file, "# pack-refs with: peeled \n"); @@ -103,7 +102,7 @@ int pack_refs(unsigned int flags) if (ferror(cbdata.refs_file)) die("failed to write ref-pack file"); if (fflush(cbdata.refs_file) || fsync(fd) || fclose(cbdata.refs_file)) - die("failed to write ref-pack file (%s)", strerror(errno)); + die_errno("failed to write ref-pack file"); /* * Since the lock file was fdopen()'ed and then fclose()'ed above, * assign -1 to the lock file descriptor so that commit_lock_file() @@ -111,7 +110,7 @@ int pack_refs(unsigned int flags) */ packed.fd = -1; if (commit_lock_file(&packed) < 0) - die("unable to overwrite old ref-pack file (%s)", strerror(errno)); + die_errno("unable to overwrite old ref-pack file"); if (cbdata.flags & PACK_REFS_PRUNE) prune_refs(cbdata.ref_to_prune); return 0; diff --git a/pack-write.c b/pack-write.c index 7053538f4c..741efcd93b 100644 --- a/pack-write.c +++ b/pack-write.c @@ -51,7 +51,7 @@ char *write_idx_file(char *index_name, struct pack_idx_entry **objects, fd = open(index_name, O_CREAT|O_EXCL|O_WRONLY, 0600); } if (fd < 0) - die("unable to create %s: %s", index_name, strerror(errno)); + die_errno("unable to create '%s'", index_name); f = sha1fd(fd, index_name); /* if last object's offset is >= 2^31 we should use index V2 */ @@ -174,11 +174,11 @@ void fixup_pack_header_footer(int pack_fd, git_SHA1_Init(&new_sha1_ctx); if (lseek(pack_fd, 0, SEEK_SET) != 0) - die("Failed seeking to start of %s: %s", pack_name, strerror(errno)); + die_errno("Failed seeking to start of '%s'", pack_name); if (read_in_full(pack_fd, &hdr, sizeof(hdr)) != sizeof(hdr)) - die("Unable to reread header of %s: %s", pack_name, strerror(errno)); + die_errno("Unable to reread header of '%s'", pack_name); if (lseek(pack_fd, 0, SEEK_SET) != 0) - die("Failed seeking to start of %s: %s", pack_name, strerror(errno)); + die_errno("Failed seeking to start of '%s'", pack_name); git_SHA1_Update(&old_sha1_ctx, &hdr, sizeof(hdr)); hdr.hdr_entries = htonl(object_count); git_SHA1_Update(&new_sha1_ctx, &hdr, sizeof(hdr)); @@ -195,7 +195,7 @@ void fixup_pack_header_footer(int pack_fd, if (!n) break; if (n < 0) - die("Failed to checksum %s: %s", pack_name, strerror(errno)); + die_errno("Failed to checksum '%s'", pack_name); git_SHA1_Update(&new_sha1_ctx, buf, n); aligned_sz -= n; diff --git a/pkt-line.c b/pkt-line.c index f5d00863a6..b691abebd7 100644 --- a/pkt-line.c +++ b/pkt-line.c @@ -28,7 +28,7 @@ ssize_t safe_write(int fd, const void *buf, ssize_t n) } if (!ret) die("write error (disk full?)"); - die("write error (%s)", strerror(errno)); + die_errno("write error"); } return nn; } @@ -67,7 +67,7 @@ static void safe_read(int fd, void *buffer, unsigned size) { ssize_t ret = read_in_full(fd, buffer, size); if (ret < 0) - die("read error (%s)", strerror(errno)); + die_errno("read error"); else if (ret < size) die("The remote end hung up unexpectedly"); } diff --git a/read-cache.c b/read-cache.c index 3f587110cb..f76b5bb2e1 100644 --- a/read-cache.c +++ b/read-cache.c @@ -638,7 +638,7 @@ int add_file_to_index(struct index_state *istate, const char *path, int flags) { struct stat st; if (lstat(path, &st)) - die("%s: unable to stat (%s)", path, strerror(errno)); + die_errno("unable to stat '%s'", path); return add_to_index(istate, path, &st, flags); } @@ -1251,11 +1251,11 @@ int read_index_from(struct index_state *istate, const char *path) if (fd < 0) { if (errno == ENOENT) return 0; - die("index file open failed (%s)", strerror(errno)); + die_errno("index file open failed"); } if (fstat(fd, &st)) - die("cannot stat the open index (%s)", strerror(errno)); + die_errno("cannot stat the open index"); errno = EINVAL; mmap_size = xsize_t(st.st_size); diff --git a/refs.c b/refs.c index 24438c652f..dffe395a97 100644 --- a/refs.c +++ b/refs.c @@ -1418,7 +1418,7 @@ int read_ref_at(const char *ref, unsigned long at_time, int cnt, unsigned char * logfile = git_path("logs/%s", ref); logfd = open(logfile, O_RDONLY, 0); if (logfd < 0) - die("Unable to read log %s: %s", logfile, strerror(errno)); + die_errno("Unable to read log '%s'", logfile); fstat(logfd, &st); if (!st.st_size) die("Log %s is empty.", logfile); diff --git a/run-command.c b/run-command.c index eb2efc3307..ff3d8e2d8b 100644 --- a/run-command.c +++ b/run-command.c @@ -101,8 +101,8 @@ int start_command(struct child_process *cmd) } if (cmd->dir && chdir(cmd->dir)) - die("exec %s: cd to %s failed (%s)", cmd->argv[0], - cmd->dir, strerror(errno)); + die_errno("exec '%s': cd to '%s' failed", cmd->argv[0], + cmd->dir); if (cmd->env) { for (; *cmd->env; cmd->env++) { if (strchr(*cmd->env, '=')) diff --git a/setup.c b/setup.c index ebd60de9ce..4d27f28c8f 100644 --- a/setup.c +++ b/setup.c @@ -81,7 +81,7 @@ void verify_filename(const char *prefix, const char *arg) if (errno == ENOENT) die("ambiguous argument '%s': unknown revision or path not in the working tree.\n" "Use '--' to separate paths from revisions", arg); - die("'%s': %s", arg, strerror(errno)); + die_errno("failed to stat '%s'", arg); } /* @@ -103,7 +103,7 @@ void verify_non_filename(const char *prefix, const char *arg) die("ambiguous argument '%s': both revision and filename\n" "Use '--' to separate filenames from revisions", arg); if (errno != ENOENT && errno != ENOTDIR) - die("'%s': %s", arg, strerror(errno)); + die_errno("failed to stat '%s'", arg); } const char **get_pathspec(const char *prefix, const char **pathspec) @@ -257,7 +257,7 @@ const char *read_gitfile_gently(const char *path) return NULL; fd = open(path, O_RDONLY); if (fd < 0) - die("Error opening %s: %s", path, strerror(errno)); + die_errno("Error opening '%s'", path); buf = xmalloc(st.st_size + 1); len = read_in_full(fd, buf, st.st_size); close(fd); @@ -389,7 +389,7 @@ const char *setup_git_directory_gently(int *nongit_ok) die("Not a git repository (or any of the parent directories): %s", DEFAULT_GIT_DIR_ENVIRONMENT); } if (chdir("..")) - die("Cannot change to %s/..: %s", cwd, strerror(errno)); + die_errno("Cannot change to '%s/..'", cwd); } inside_git_dir = 0; diff --git a/sha1_file.c b/sha1_file.c index e73cd4fc0b..1964a6d39b 100644 --- a/sha1_file.c +++ b/sha1_file.c @@ -2287,7 +2287,7 @@ static void close_sha1_file(int fd) if (fsync_object_files) fsync_or_die(fd, "sha1 file"); if (close(fd) != 0) - die("error when closing sha1 file (%s)", strerror(errno)); + die_errno("error when closing sha1 file"); } /* Size of directory component, including the ending '/' */ diff --git a/shell.c b/shell.c index b968be79f4..e4864e04da 100644 --- a/shell.c +++ b/shell.c @@ -60,7 +60,7 @@ int main(int argc, char **argv) while (devnull_fd >= 0 && devnull_fd <= 2) devnull_fd = dup(devnull_fd); if (devnull_fd == -1) - die("opening /dev/null failed (%s)", strerror(errno)); + die_errno("opening /dev/null failed"); close (devnull_fd); /* diff --git a/test-sha1.c b/test-sha1.c index 9b98d07c78..80daba980e 100644 --- a/test-sha1.c +++ b/test-sha1.c @@ -32,7 +32,7 @@ int main(int ac, char **av) if (sz == 0) break; if (sz < 0) - die("test-sha1: %s", strerror(errno)); + die_errno("test-sha1"); this_sz += sz; cp += sz; room -= sz; diff --git a/wrapper.c b/wrapper.c index 7eb3218ee9..c9be1400c0 100644 --- a/wrapper.c +++ b/wrapper.c @@ -96,7 +96,7 @@ void *xmmap(void *start, size_t length, release_pack_memory(length, fd); ret = mmap(start, length, prot, flags, fd, offset); if (ret == MAP_FAILED) - die("Out of memory? mmap failed: %s", strerror(errno)); + die_errno("Out of memory? mmap failed"); } return ret; } @@ -175,7 +175,7 @@ int xdup(int fd) { int ret = dup(fd); if (ret < 0) - die("dup failed: %s", strerror(errno)); + die_errno("dup failed"); return ret; } @@ -183,7 +183,7 @@ FILE *xfdopen(int fd, const char *mode) { FILE *stream = fdopen(fd, mode); if (stream == NULL) - die("Out of memory? fdopen failed: %s", strerror(errno)); + die_errno("Out of memory? fdopen failed"); return stream; } @@ -193,7 +193,7 @@ int xmkstemp(char *template) fd = mkstemp(template); if (fd < 0) - die("Unable to create temporary file: %s", strerror(errno)); + die_errno("Unable to create temporary file"); return fd; } diff --git a/write_or_die.c b/write_or_die.c index 4c29255df1..d45b536021 100644 --- a/write_or_die.c +++ b/write_or_die.c @@ -41,14 +41,14 @@ void maybe_flush_or_die(FILE *f, const char *desc) */ if (errno == EPIPE || errno == EINVAL) exit(0); - die("write failure on %s: %s", desc, strerror(errno)); + die_errno("write failure on '%s'", desc); } } void fsync_or_die(int fd, const char *msg) { if (fsync(fd) < 0) { - die("%s: fsync error (%s)", msg, strerror(errno)); + die_errno("fsync error on '%s'", msg); } } @@ -57,7 +57,7 @@ void write_or_die(int fd, const void *buf, size_t count) if (write_in_full(fd, buf, count) < 0) { if (errno == EPIPE) exit(0); - die("write error (%s)", strerror(errno)); + die_errno("write error"); } } -- cgit v1.3-5-g9baa From 5bf9219d01b16444b316fe764b58d15bd9265f74 Mon Sep 17 00:00:00 2001 From: Ilari Liusvaara Date: Tue, 26 Jan 2010 20:24:12 +0200 Subject: Add xmallocz() Add routine for allocating NUL-terminated memory block without risking integer overflow in addition of +1 for NUL byte. [jc: with suggestion from Bill Lear] Signed-off-by: Ilari Liusvaara Signed-off-by: Junio C Hamano --- git-compat-util.h | 1 + wrapper.c | 15 +++++++++++---- 2 files changed, 12 insertions(+), 4 deletions(-) (limited to 'wrapper.c') diff --git a/git-compat-util.h b/git-compat-util.h index ef60803384..31e2ef9e9e 100644 --- a/git-compat-util.h +++ b/git-compat-util.h @@ -343,6 +343,7 @@ extern void release_pack_memory(size_t, int); extern char *xstrdup(const char *str); extern void *xmalloc(size_t size); +extern void *xmallocz(size_t size); extern void *xmemdupz(const void *data, size_t len); extern char *xstrndup(const char *str, size_t len); extern void *xrealloc(void *ptr, size_t size); diff --git a/wrapper.c b/wrapper.c index c9be1400c0..0e3e20a3fd 100644 --- a/wrapper.c +++ b/wrapper.c @@ -34,6 +34,16 @@ void *xmalloc(size_t size) return ret; } +void *xmallocz(size_t size) +{ + void *ret; + if (size + 1 < size) + die("Data too large to fit into virtual memory space."); + ret = xmalloc(size + 1); + ((char*)ret)[size] = 0; + return ret; +} + /* * xmemdupz() allocates (len + 1) bytes of memory, duplicates "len" bytes of * "data" to the allocated memory, zero terminates the allocated memory, @@ -42,10 +52,7 @@ void *xmalloc(size_t size) */ void *xmemdupz(const void *data, size_t len) { - char *p = xmalloc(len + 1); - memcpy(p, data, len); - p[len] = '\0'; - return p; + return memcpy(xmallocz(len), data, len); } char *xstrndup(const char *str, size_t len) -- cgit v1.3-5-g9baa