diff --git a/Documentation/technical/api-strbuf.txt b/Documentation/technical/api-strbuf.txt index f9c06a7573..430302c2f4 100644 --- a/Documentation/technical/api-strbuf.txt +++ b/Documentation/technical/api-strbuf.txt @@ -307,6 +307,16 @@ same behaviour as well. use it unless you need the correct position in the file descriptor. +`strbuf_getcwd`:: + + Set the buffer to the path of the current working directory. + +`strbuf_add_absolute_path` + + Add a path to a buffer, converting a relative path to an + absolute one in the process. Symbolic links are not + resolved. + `stripspace`:: Strip whitespace from a buffer. The second parameter controls if diff --git a/abspath.c b/abspath.c index ca33558a91..5edb4e7816 100644 --- a/abspath.c +++ b/abspath.c @@ -33,7 +33,7 @@ int is_directory(const char *path) */ static const char *real_path_internal(const char *path, int die_on_error) { - static char bufs[2][PATH_MAX + 1], *buf = bufs[0], *next_buf = bufs[1]; + static struct strbuf sb = STRBUF_INIT; char *retval = NULL; /* @@ -41,16 +41,14 @@ static const char *real_path_internal(const char *path, int die_on_error) * here so that we can chdir() back to it at the end of the * function: */ - char cwd[1024] = ""; - - int buf_index = 1; + struct strbuf cwd = STRBUF_INIT; int depth = MAXDEPTH; char *last_elem = NULL; struct stat st; /* We've already done it */ - if (path == buf || path == next_buf) + if (path == sb.buf) return path; if (!*path) { @@ -60,41 +58,38 @@ static const char *real_path_internal(const char *path, int die_on_error) goto error_out; } - if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX) { - if (die_on_error) - die("Too long path: %.*s", 60, path); - else - goto error_out; - } + strbuf_reset(&sb); + strbuf_addstr(&sb, path); while (depth--) { - if (!is_directory(buf)) { - char *last_slash = find_last_dir_sep(buf); + if (!is_directory(sb.buf)) { + char *last_slash = find_last_dir_sep(sb.buf); if (last_slash) { last_elem = xstrdup(last_slash + 1); - last_slash[1] = '\0'; + strbuf_setlen(&sb, last_slash - sb.buf + 1); } else { - last_elem = xstrdup(buf); - *buf = '\0'; + last_elem = xmemdupz(sb.buf, sb.len); + strbuf_reset(&sb); } } - if (*buf) { - if (!*cwd && !getcwd(cwd, sizeof(cwd))) { + if (sb.len) { + if (!cwd.len && strbuf_getcwd(&cwd)) { if (die_on_error) die_errno("Could not get current working directory"); else goto error_out; } - if (chdir(buf)) { + if (chdir(sb.buf)) { if (die_on_error) - die_errno("Could not switch to '%s'", buf); + die_errno("Could not switch to '%s'", + sb.buf); else goto error_out; } } - if (!getcwd(buf, PATH_MAX)) { + if (strbuf_getcwd(&sb)) { if (die_on_error) die_errno("Could not get current working directory"); else @@ -102,48 +97,35 @@ static const char *real_path_internal(const char *path, int die_on_error) } if (last_elem) { - size_t len = strlen(buf); - if (len + strlen(last_elem) + 2 > PATH_MAX) { - if (die_on_error) - die("Too long path name: '%s/%s'", - buf, last_elem); - else - goto error_out; - } - if (len && !is_dir_sep(buf[len - 1])) - buf[len++] = '/'; - strcpy(buf + len, last_elem); + if (sb.len && !is_dir_sep(sb.buf[sb.len - 1])) + strbuf_addch(&sb, '/'); + strbuf_addstr(&sb, last_elem); free(last_elem); last_elem = NULL; } - if (!lstat(buf, &st) && S_ISLNK(st.st_mode)) { - ssize_t len = readlink(buf, next_buf, PATH_MAX); + if (!lstat(sb.buf, &st) && S_ISLNK(st.st_mode)) { + struct strbuf next_sb = STRBUF_INIT; + ssize_t len = strbuf_readlink(&next_sb, sb.buf, 0); if (len < 0) { if (die_on_error) - die_errno("Invalid symlink '%s'", buf); + die_errno("Invalid symlink '%s'", + sb.buf); else goto error_out; } - if (PATH_MAX <= len) { - if (die_on_error) - die("symbolic link too long: %s", buf); - else - goto error_out; - } - next_buf[len] = '\0'; - buf = next_buf; - buf_index = 1 - buf_index; - next_buf = bufs[buf_index]; + strbuf_swap(&sb, &next_sb); + strbuf_release(&next_sb); } else break; } - retval = buf; + retval = sb.buf; error_out: free(last_elem); - if (*cwd && chdir(cwd)) - die_errno("Could not change back to '%s'", cwd); + if (cwd.len && chdir(cwd.buf)) + die_errno("Could not change back to '%s'", cwd.buf); + strbuf_release(&cwd); return retval; } @@ -158,54 +140,16 @@ const char *real_path_if_valid(const char *path) return real_path_internal(path, 0); } -static const char *get_pwd_cwd(void) -{ - static char cwd[PATH_MAX + 1]; - char *pwd; - struct stat cwd_stat, pwd_stat; - if (getcwd(cwd, PATH_MAX) == NULL) - return NULL; - pwd = getenv("PWD"); - if (pwd && strcmp(pwd, cwd)) { - stat(cwd, &cwd_stat); - if ((cwd_stat.st_dev || cwd_stat.st_ino) && - !stat(pwd, &pwd_stat) && - pwd_stat.st_dev == cwd_stat.st_dev && - pwd_stat.st_ino == cwd_stat.st_ino) { - strlcpy(cwd, pwd, PATH_MAX); - } - } - return cwd; -} - /* * Use this to get an absolute path from a relative one. If you want * to resolve links, you should use real_path. - * - * If the path is already absolute, then return path. As the user is - * never meant to free the return value, we're safe. */ const char *absolute_path(const char *path) { - static char buf[PATH_MAX + 1]; - - if (!*path) { - die("The empty string is not a valid path"); - } else if (is_absolute_path(path)) { - if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX) - die("Too long path: %.*s", 60, path); - } else { - size_t len; - const char *fmt; - const char *cwd = get_pwd_cwd(); - if (!cwd) - die_errno("Cannot determine the current working directory"); - len = strlen(cwd); - fmt = (len > 0 && is_dir_sep(cwd[len - 1])) ? "%s%s" : "%s/%s"; - if (snprintf(buf, PATH_MAX, fmt, cwd, path) >= PATH_MAX) - die("Too long path: %.*s", 60, path); - } - return buf; + static struct strbuf sb = STRBUF_INIT; + strbuf_reset(&sb); + strbuf_add_absolute_path(&sb, path); + return sb.buf; } /* diff --git a/builtin/init-db.c b/builtin/init-db.c index 6d8ac2cc33..587a5055ed 100644 --- a/builtin/init-db.c +++ b/builtin/init-db.c @@ -426,8 +426,9 @@ int init_db(const char *template_dir, unsigned int flags) static int guess_repository_type(const char *git_dir) { - char cwd[PATH_MAX]; const char *slash; + char *cwd; + int cwd_is_git_dir; /* * "GIT_DIR=. git init" is always bare. @@ -435,9 +436,10 @@ static int guess_repository_type(const char *git_dir) */ if (!strcmp(".", git_dir)) return 1; - if (!getcwd(cwd, sizeof(cwd))) - die_errno(_("cannot tell cwd")); - if (!strcmp(git_dir, cwd)) + cwd = xgetcwd(); + cwd_is_git_dir = !strcmp(git_dir, cwd); + free(cwd); + if (cwd_is_git_dir) return 1; /* * "GIT_DIR=.git or GIT_DIR=something/.git is usually not. @@ -535,10 +537,9 @@ int cmd_init_db(int argc, const char **argv, const char *prefix) usage(init_db_usage[0]); } if (is_bare_repository_cfg == 1) { - static char git_dir[PATH_MAX+1]; - - setenv(GIT_DIR_ENVIRONMENT, - getcwd(git_dir, sizeof(git_dir)), argc > 0); + char *cwd = xgetcwd(); + setenv(GIT_DIR_ENVIRONMENT, cwd, argc > 0); + free(cwd); } if (init_shared_repository != -1) @@ -572,11 +573,8 @@ int cmd_init_db(int argc, const char **argv, const char *prefix) git_work_tree_cfg = xstrdup(real_path(rel)); free(rel); } - if (!git_work_tree_cfg) { - git_work_tree_cfg = xcalloc(PATH_MAX, 1); - if (!getcwd(git_work_tree_cfg, PATH_MAX)) - die_errno (_("Cannot access current working directory")); - } + if (!git_work_tree_cfg) + git_work_tree_cfg = xgetcwd(); if (work_tree) set_git_work_tree(work_tree); else diff --git a/builtin/rev-parse.c b/builtin/rev-parse.c index d85e08cc9c..c911b456de 100644 --- a/builtin/rev-parse.c +++ b/builtin/rev-parse.c @@ -736,7 +736,7 @@ int cmd_rev_parse(int argc, const char **argv, const char *prefix) } if (!strcmp(arg, "--git-dir")) { const char *gitdir = getenv(GIT_DIR_ENVIRONMENT); - static char cwd[PATH_MAX]; + char *cwd; int len; if (gitdir) { puts(gitdir); @@ -746,10 +746,10 @@ int cmd_rev_parse(int argc, const char **argv, const char *prefix) puts(".git"); continue; } - if (!getcwd(cwd, PATH_MAX)) - die_errno("unable to get current working directory"); + cwd = xgetcwd(); len = strlen(cwd); printf("%s%s.git\n", cwd, len && cwd[len-1] != '/' ? "/" : ""); + free(cwd); continue; } if (!strcmp(arg, "--resolve-git-dir")) { diff --git a/dir.c b/dir.c index fcb68729b1..bd274a73f1 100644 --- a/dir.c +++ b/dir.c @@ -1507,12 +1507,16 @@ int dir_inside_of(const char *subdir, const char *dir) int is_inside_dir(const char *dir) { - char cwd[PATH_MAX]; + char *cwd; + int rc; + if (!dir) return 0; - if (!getcwd(cwd, sizeof(cwd))) - die_errno("can't find the current directory"); - return dir_inside_of(cwd, dir) >= 0; + + cwd = xgetcwd(); + rc = (dir_inside_of(cwd, dir) >= 0); + free(cwd); + return rc; } int is_empty_dir(const char *path) diff --git a/exec_cmd.c b/exec_cmd.c index 125fa6fabf..698e7526c4 100644 --- a/exec_cmd.c +++ b/exec_cmd.c @@ -86,11 +86,7 @@ const char *git_exec_path(void) static void add_path(struct strbuf *out, const char *path) { if (path && *path) { - if (is_absolute_path(path)) - strbuf_addstr(out, path); - else - strbuf_addstr(out, absolute_path(path)); - + strbuf_add_absolute_path(out, path); strbuf_addch(out, PATH_SEP); } } diff --git a/git-compat-util.h b/git-compat-util.h index f587749b7c..c150e3f8e7 100644 --- a/git-compat-util.h +++ b/git-compat-util.h @@ -607,6 +607,7 @@ extern int xmkstemp(char *template); extern int xmkstemp_mode(char *template, int mode); extern int odb_mkstemp(char *template, size_t limit, const char *pattern); extern int odb_pack_keep(char *name, size_t namesz, const unsigned char *sha1); +extern char *xgetcwd(void); static inline size_t xsize_t(off_t len) { diff --git a/git.c b/git.c index 9c49519831..210f1ae9d0 100644 --- a/git.c +++ b/git.c @@ -20,7 +20,7 @@ const char git_more_info_string[] = static struct startup_info git_startup_info; static int use_pager = -1; -static char orig_cwd[PATH_MAX]; +static char *orig_cwd; static const char *env_names[] = { GIT_DIR_ENVIRONMENT, GIT_WORK_TREE_ENVIRONMENT, @@ -36,8 +36,7 @@ static void save_env(void) if (saved_environment) return; saved_environment = 1; - if (!getcwd(orig_cwd, sizeof(orig_cwd))) - die_errno("cannot getcwd"); + orig_cwd = xgetcwd(); for (i = 0; i < ARRAY_SIZE(env_names); i++) { orig_env[i] = getenv(env_names[i]); if (orig_env[i]) @@ -48,8 +47,9 @@ static void save_env(void) static void restore_env(void) { int i; - if (*orig_cwd && chdir(orig_cwd)) + if (orig_cwd && chdir(orig_cwd)) die_errno("could not move to %s", orig_cwd); + free(orig_cwd); for (i = 0; i < ARRAY_SIZE(env_names); i++) { if (orig_env[i]) setenv(env_names[i], orig_env[i], 1); @@ -161,9 +161,10 @@ static int handle_options(const char ***argv, int *argc, int *envchanged) if (envchanged) *envchanged = 1; } else if (!strcmp(cmd, "--bare")) { - static char git_dir[PATH_MAX+1]; + char *cwd = xgetcwd(); is_bare_repository_cfg = 1; - setenv(GIT_DIR_ENVIRONMENT, getcwd(git_dir, sizeof(git_dir)), 0); + setenv(GIT_DIR_ENVIRONMENT, cwd, 0); + free(cwd); setenv(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT, "0", 1); if (envchanged) *envchanged = 1; diff --git a/setup.c b/setup.c index 793369da36..979b13f0c6 100644 --- a/setup.c +++ b/setup.c @@ -387,7 +387,7 @@ const char *read_gitfile(const char *path) } static const char *setup_explicit_git_dir(const char *gitdirenv, - char *cwd, int len, + struct strbuf *cwd, int *nongit_ok) { const char *work_tree_env = getenv(GIT_WORK_TREE_ENVIRONMENT); @@ -434,16 +434,16 @@ static const char *setup_explicit_git_dir(const char *gitdirenv, if (is_absolute_path(git_work_tree_cfg)) set_git_work_tree(git_work_tree_cfg); else { - char core_worktree[PATH_MAX]; + char *core_worktree; if (chdir(gitdirenv)) die_errno("Could not chdir to '%s'", gitdirenv); if (chdir(git_work_tree_cfg)) die_errno("Could not chdir to '%s'", git_work_tree_cfg); - if (!getcwd(core_worktree, PATH_MAX)) - die_errno("Could not get directory '%s'", git_work_tree_cfg); - if (chdir(cwd)) + core_worktree = xgetcwd(); + if (chdir(cwd->buf)) die_errno("Could not come back to cwd"); set_git_work_tree(core_worktree); + free(core_worktree); } } else if (!git_env_bool(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT, 1)) { @@ -459,21 +459,20 @@ static const char *setup_explicit_git_dir(const char *gitdirenv, worktree = get_git_work_tree(); /* both get_git_work_tree() and cwd are already normalized */ - if (!strcmp(cwd, worktree)) { /* cwd == worktree */ + if (!strcmp(cwd->buf, worktree)) { /* cwd == worktree */ set_git_dir(gitdirenv); free(gitfile); return NULL; } - offset = dir_inside_of(cwd, worktree); + offset = dir_inside_of(cwd->buf, worktree); if (offset >= 0) { /* cwd inside worktree? */ set_git_dir(real_path(gitdirenv)); if (chdir(worktree)) die_errno("Could not chdir to '%s'", worktree); - cwd[len++] = '/'; - cwd[len] = '\0'; + strbuf_addch(cwd, '/'); free(gitfile); - return cwd + offset; + return cwd->buf + offset; } /* cwd outside worktree */ @@ -483,7 +482,7 @@ static const char *setup_explicit_git_dir(const char *gitdirenv, } static const char *setup_discovered_git_dir(const char *gitdir, - char *cwd, int offset, int len, + struct strbuf *cwd, int offset, int *nongit_ok) { if (check_repository_format_gently(gitdir, nongit_ok)) @@ -491,17 +490,17 @@ static const char *setup_discovered_git_dir(const char *gitdir, /* --work-tree is set without --git-dir; use discovered one */ if (getenv(GIT_WORK_TREE_ENVIRONMENT) || git_work_tree_cfg) { - if (offset != len && !is_absolute_path(gitdir)) + if (offset != cwd->len && !is_absolute_path(gitdir)) gitdir = xstrdup(real_path(gitdir)); - if (chdir(cwd)) + if (chdir(cwd->buf)) die_errno("Could not come back to cwd"); - return setup_explicit_git_dir(gitdir, cwd, len, nongit_ok); + return setup_explicit_git_dir(gitdir, cwd, nongit_ok); } /* #16.2, #17.2, #20.2, #21.2, #24, #25, #28, #29 (see t1510) */ if (is_bare_repository_cfg > 0) { - set_git_dir(offset == len ? gitdir : real_path(gitdir)); - if (chdir(cwd)) + set_git_dir(offset == cwd->len ? gitdir : real_path(gitdir)); + if (chdir(cwd->buf)) die_errno("Could not come back to cwd"); return NULL; } @@ -512,18 +511,18 @@ static const char *setup_discovered_git_dir(const char *gitdir, set_git_dir(gitdir); inside_git_dir = 0; inside_work_tree = 1; - if (offset == len) + if (offset == cwd->len) return NULL; /* Make "offset" point to past the '/', and add a '/' at the end */ offset++; - cwd[len++] = '/'; - cwd[len] = 0; - return cwd + offset; + strbuf_addch(cwd, '/'); + return cwd->buf + offset; } /* #16.1, #17.1, #20.1, #21.1, #22.1 (see t1510) */ -static const char *setup_bare_git_dir(char *cwd, int offset, int len, int *nongit_ok) +static const char *setup_bare_git_dir(struct strbuf *cwd, int offset, + int *nongit_ok) { int root_len; @@ -536,20 +535,20 @@ static const char *setup_bare_git_dir(char *cwd, int offset, int len, int *nongi if (getenv(GIT_WORK_TREE_ENVIRONMENT) || git_work_tree_cfg) { const char *gitdir; - gitdir = offset == len ? "." : xmemdupz(cwd, offset); - if (chdir(cwd)) + gitdir = offset == cwd->len ? "." : xmemdupz(cwd->buf, offset); + if (chdir(cwd->buf)) die_errno("Could not come back to cwd"); - return setup_explicit_git_dir(gitdir, cwd, len, nongit_ok); + return setup_explicit_git_dir(gitdir, cwd, nongit_ok); } inside_git_dir = 1; inside_work_tree = 0; - if (offset != len) { - if (chdir(cwd)) + if (offset != cwd->len) { + if (chdir(cwd->buf)) die_errno("Cannot come back to cwd"); - root_len = offset_1st_component(cwd); - cwd[offset > root_len ? offset : root_len] = '\0'; - set_git_dir(cwd); + root_len = offset_1st_component(cwd->buf); + strbuf_setlen(cwd, offset > root_len ? offset : root_len); + set_git_dir(cwd->buf); } else set_git_dir("."); @@ -617,10 +616,10 @@ static const char *setup_git_directory_gently_1(int *nongit_ok) { const char *env_ceiling_dirs = getenv(CEILING_DIRECTORIES_ENVIRONMENT); struct string_list ceiling_dirs = STRING_LIST_INIT_DUP; - static char cwd[PATH_MAX + 1]; + static struct strbuf cwd = STRBUF_INIT; const char *gitdirenv, *ret; char *gitfile; - int len, offset, offset_parent, ceil_offset = -1; + int offset, offset_parent, ceil_offset = -1; dev_t current_device = 0; int one_filesystem = 1; @@ -641,9 +640,9 @@ static const char *setup_git_directory_gently_1(int *nongit_ok) if (nongit_ok) *nongit_ok = 0; - if (!getcwd(cwd, sizeof(cwd) - 1)) + if (strbuf_getcwd(&cwd)) die_errno("Unable to read current working directory"); - offset = len = strlen(cwd); + offset = cwd.len; /* * If GIT_DIR is set explicitly, we're not going @@ -652,7 +651,7 @@ static const char *setup_git_directory_gently_1(int *nongit_ok) */ gitdirenv = getenv(GIT_DIR_ENVIRONMENT); if (gitdirenv) - return setup_explicit_git_dir(gitdirenv, cwd, len, nongit_ok); + return setup_explicit_git_dir(gitdirenv, &cwd, nongit_ok); if (env_ceiling_dirs) { int empty_entry_found = 0; @@ -660,11 +659,11 @@ static const char *setup_git_directory_gently_1(int *nongit_ok) string_list_split(&ceiling_dirs, env_ceiling_dirs, PATH_SEP, -1); filter_string_list(&ceiling_dirs, 0, canonicalize_ceiling_entry, &empty_entry_found); - ceil_offset = longest_ancestor_length(cwd, &ceiling_dirs); + ceil_offset = longest_ancestor_length(cwd.buf, &ceiling_dirs); string_list_clear(&ceiling_dirs, 0); } - if (ceil_offset < 0 && has_dos_drive_prefix(cwd)) + if (ceil_offset < 0 && has_dos_drive_prefix(cwd.buf)) ceil_offset = 1; /* @@ -692,7 +691,7 @@ static const char *setup_git_directory_gently_1(int *nongit_ok) if (gitdirenv) { ret = setup_discovered_git_dir(gitdirenv, - cwd, offset, len, + &cwd, offset, nongit_ok); free(gitfile); return ret; @@ -700,29 +699,31 @@ static const char *setup_git_directory_gently_1(int *nongit_ok) free(gitfile); if (is_git_directory(".")) - return setup_bare_git_dir(cwd, offset, len, nongit_ok); + return setup_bare_git_dir(&cwd, offset, nongit_ok); offset_parent = offset; - while (--offset_parent > ceil_offset && cwd[offset_parent] != '/'); + while (--offset_parent > ceil_offset && cwd.buf[offset_parent] != '/'); if (offset_parent <= ceil_offset) - return setup_nongit(cwd, nongit_ok); + return setup_nongit(cwd.buf, nongit_ok); if (one_filesystem) { - dev_t parent_device = get_device_or_die("..", cwd, offset); + dev_t parent_device = get_device_or_die("..", cwd.buf, + offset); if (parent_device != current_device) { if (nongit_ok) { - if (chdir(cwd)) + if (chdir(cwd.buf)) die_errno("Cannot come back to cwd"); *nongit_ok = 1; return NULL; } - cwd[offset] = '\0'; + strbuf_setlen(&cwd, offset); die("Not a git repository (or any parent up to mount point %s)\n" - "Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).", cwd); + "Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).", + cwd.buf); } } if (chdir("..")) { - cwd[offset] = '\0'; - die_errno("Cannot change to '%s/..'", cwd); + strbuf_setlen(&cwd, offset); + die_errno("Cannot change to '%s/..'", cwd.buf); } offset = offset_parent; } diff --git a/sha1_file.c b/sha1_file.c index 3f70b1d86a..95afd20910 100644 --- a/sha1_file.c +++ b/sha1_file.c @@ -350,7 +350,7 @@ static void link_alt_odb_entries(const char *alt, int len, int sep, return; } - strbuf_addstr(&objdirbuf, absolute_path(get_object_directory())); + strbuf_add_absolute_path(&objdirbuf, get_object_directory()); normalize_path_copy(objdirbuf.buf, objdirbuf.buf); alt_copy = xmemdupz(alt, len); diff --git a/strbuf.c b/strbuf.c index 33018d847f..4d3144308f 100644 --- a/strbuf.c +++ b/strbuf.c @@ -406,6 +406,27 @@ int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint) return -1; } +int strbuf_getcwd(struct strbuf *sb) +{ + size_t oldalloc = sb->alloc; + size_t guessed_len = 128; + + for (;; guessed_len *= 2) { + strbuf_grow(sb, guessed_len); + if (getcwd(sb->buf, sb->alloc)) { + strbuf_setlen(sb, strlen(sb->buf)); + return 0; + } + if (errno != ERANGE) + break; + } + if (oldalloc == 0) + strbuf_release(sb); + else + strbuf_reset(sb); + return -1; +} + int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term) { int ch; @@ -555,6 +576,31 @@ void strbuf_humanise_bytes(struct strbuf *buf, off_t bytes) } } +void strbuf_add_absolute_path(struct strbuf *sb, const char *path) +{ + if (!*path) + die("The empty string is not a valid path"); + if (!is_absolute_path(path)) { + struct stat cwd_stat, pwd_stat; + size_t orig_len = sb->len; + char *cwd = xgetcwd(); + char *pwd = getenv("PWD"); + if (pwd && strcmp(pwd, cwd) && + !stat(cwd, &cwd_stat) && + (cwd_stat.st_dev || cwd_stat.st_ino) && + !stat(pwd, &pwd_stat) && + pwd_stat.st_dev == cwd_stat.st_dev && + pwd_stat.st_ino == cwd_stat.st_ino) + strbuf_addstr(sb, pwd); + else + strbuf_addstr(sb, cwd); + if (sb->len > orig_len && !is_dir_sep(sb->buf[sb->len - 1])) + strbuf_addch(sb, '/'); + free(cwd); + } + strbuf_addstr(sb, path); +} + int printf_ln(const char *fmt, ...) { int ret; diff --git a/strbuf.h b/strbuf.h index a7c0192e9e..7bdc1da507 100644 --- a/strbuf.h +++ b/strbuf.h @@ -174,6 +174,7 @@ extern size_t strbuf_fread(struct strbuf *, size_t, FILE *); extern ssize_t strbuf_read(struct strbuf *, int fd, size_t hint); extern int strbuf_read_file(struct strbuf *sb, const char *path, size_t hint); extern int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint); +extern int strbuf_getcwd(struct strbuf *sb); extern int strbuf_getwholeline(struct strbuf *, FILE *, int); extern int strbuf_getline(struct strbuf *, FILE *, int); @@ -189,6 +190,8 @@ extern void strbuf_addstr_urlencode(struct strbuf *, const char *, int reserved); extern void strbuf_humanise_bytes(struct strbuf *buf, off_t bytes); +extern void strbuf_add_absolute_path(struct strbuf *sb, const char *path); + __attribute__((format (printf,1,2))) extern int printf_ln(const char *fmt, ...); __attribute__((format (printf,2,3))) diff --git a/trace.c b/trace.c index e583dc63bb..54aaee5818 100644 --- a/trace.c +++ b/trace.c @@ -298,13 +298,12 @@ void trace_repo_setup(const char *prefix) { static struct trace_key key = TRACE_KEY_INIT(SETUP); const char *git_work_tree; - char cwd[PATH_MAX]; + char *cwd; if (!trace_want(&key)) return; - if (!getcwd(cwd, PATH_MAX)) - die("Unable to get current working directory"); + cwd = xgetcwd(); if (!(git_work_tree = get_git_work_tree())) git_work_tree = "(null)"; @@ -316,6 +315,8 @@ void trace_repo_setup(const char *prefix) trace_printf_key(&key, "setup: worktree: %s\n", quote_crnl(git_work_tree)); trace_printf_key(&key, "setup: cwd: %s\n", quote_crnl(cwd)); trace_printf_key(&key, "setup: prefix: %s\n", quote_crnl(prefix)); + + free(cwd); } int trace_want(struct trace_key *key) diff --git a/unix-socket.c b/unix-socket.c index 91bd6b89d4..19ed48be99 100644 --- a/unix-socket.c +++ b/unix-socket.c @@ -18,12 +18,12 @@ static int chdir_len(const char *orig, int len) } struct unix_sockaddr_context { - char orig_dir[PATH_MAX]; + char *orig_dir; }; static void unix_sockaddr_cleanup(struct unix_sockaddr_context *ctx) { - if (!ctx->orig_dir[0]) + if (!ctx->orig_dir) return; /* * If we fail, we can't just return an error, since we have @@ -32,6 +32,7 @@ static void unix_sockaddr_cleanup(struct unix_sockaddr_context *ctx) */ if (chdir(ctx->orig_dir) < 0) die("unable to restore original working directory"); + free(ctx->orig_dir); } static int unix_sockaddr_init(struct sockaddr_un *sa, const char *path, @@ -39,10 +40,11 @@ static int unix_sockaddr_init(struct sockaddr_un *sa, const char *path, { int size = strlen(path) + 1; - ctx->orig_dir[0] = '\0'; + ctx->orig_dir = NULL; if (size > sizeof(sa->sun_path)) { const char *slash = find_last_dir_sep(path); const char *dir; + struct strbuf cwd = STRBUF_INIT; if (!slash) { errno = ENAMETOOLONG; @@ -56,11 +58,9 @@ static int unix_sockaddr_init(struct sockaddr_un *sa, const char *path, errno = ENAMETOOLONG; return -1; } - - if (!getcwd(ctx->orig_dir, sizeof(ctx->orig_dir))) { - errno = ENAMETOOLONG; + if (strbuf_getcwd(&cwd)) return -1; - } + ctx->orig_dir = strbuf_detach(&cwd, NULL); if (chdir_len(dir, slash - dir) < 0) return -1; } diff --git a/wrapper.c b/wrapper.c index bc1bfb8600..bd24cdabfb 100644 --- a/wrapper.c +++ b/wrapper.c @@ -493,3 +493,11 @@ struct passwd *xgetpwuid_self(void) errno ? strerror(errno) : _("no such user")); return pw; } + +char *xgetcwd(void) +{ + struct strbuf sb = STRBUF_INIT; + if (strbuf_getcwd(&sb)) + die_errno(_("unable to get current working directory")); + return strbuf_detach(&sb, NULL); +}