diff options
Diffstat (limited to 'archive-tar.c')
-rw-r--r-- | archive-tar.c | 175 |
1 files changed, 51 insertions, 124 deletions
diff --git a/archive-tar.c b/archive-tar.c index d9c30d33dc..cee06ce3cb 100644 --- a/archive-tar.c +++ b/archive-tar.c @@ -2,10 +2,7 @@ * Copyright (c) 2005, 2006 Rene Scharfe */ #include "cache.h" -#include "commit.h" -#include "strbuf.h" #include "tar.h" -#include "builtin.h" #include "archive.h" #define RECORDSIZE (512) @@ -14,9 +11,7 @@ static char block[BLOCKSIZE]; static unsigned long offset; -static time_t archive_time; static int tar_umask = 002; -static int verbose; /* writes out the whole block, but only if it is full */ static void write_if_needed(void) @@ -78,18 +73,6 @@ static void write_trailer(void) } } -static void strbuf_append_string(struct strbuf *sb, const char *s) -{ - int slen = strlen(s); - int total = sb->len + slen; - if (total > sb->alloc) { - sb->buf = xrealloc(sb->buf, total); - sb->alloc = total; - } - memcpy(sb->buf + sb->len, s, slen); - sb->len = total; -} - /* * pax extended header records have the format "%u %s=%s\n". %u contains * the size of the whole string (including the %u), the first %s is the @@ -99,26 +82,17 @@ static void strbuf_append_string(struct strbuf *sb, const char *s) static void strbuf_append_ext_header(struct strbuf *sb, const char *keyword, const char *value, unsigned int valuelen) { - char *p; - int len, total, tmp; + int len, tmp; /* "%u %s=%s\n" */ len = 1 + 1 + strlen(keyword) + 1 + valuelen + 1; for (tmp = len; tmp > 9; tmp /= 10) len++; - total = sb->len + len; - if (total > sb->alloc) { - sb->buf = xrealloc(sb->buf, total); - sb->alloc = total; - } - - p = sb->buf; - p += sprintf(p, "%u %s=", len, keyword); - memcpy(p, value, valuelen); - p += valuelen; - *p = '\n'; - sb->len = total; + strbuf_grow(sb, len); + strbuf_addf(sb, "%u %s=", len, keyword); + strbuf_add(sb, value, valuelen); + strbuf_addch(sb, '\n'); } static unsigned int ustar_header_chksum(const struct ustar_header *header) @@ -134,26 +108,26 @@ static unsigned int ustar_header_chksum(const struct ustar_header *header) return chksum; } -static int get_path_prefix(const struct strbuf *path, int maxlen) +static size_t get_path_prefix(const char *path, size_t pathlen, size_t maxlen) { - int i = path->len; + size_t i = pathlen; if (i > maxlen) i = maxlen; do { i--; - } while (i > 0 && path->buf[i] != '/'); + } while (i > 0 && path[i] != '/'); return i; } -static void write_entry(const unsigned char *sha1, struct strbuf *path, - unsigned int mode, void *buffer, unsigned long size) +static int write_tar_entry(struct archiver_args *args, + const unsigned char *sha1, const char *path, size_t pathlen, + unsigned int mode, void *buffer, unsigned long size) { struct ustar_header header; - struct strbuf ext_header; + struct strbuf ext_header = STRBUF_INIT; + int err = 0; memset(&header, 0, sizeof(header)); - ext_header.buf = NULL; - ext_header.len = ext_header.alloc = 0; if (!sha1) { *header.typeflag = TYPEFLAG_GLOBAL_HEADER; @@ -164,9 +138,7 @@ static void write_entry(const unsigned char *sha1, struct strbuf *path, mode = 0100666; sprintf(header.name, "%s.paxheader", sha1_to_hex(sha1)); } else { - if (verbose) - fprintf(stderr, "%.*s\n", path->len, path->buf); - if (S_ISDIR(mode)) { + if (S_ISDIR(mode) || S_ISGITLINK(mode)) { *header.typeflag = TYPEFLAG_DIR; mode = (mode | 0777) & ~tar_umask; } else if (S_ISLNK(mode)) { @@ -176,24 +148,24 @@ static void write_entry(const unsigned char *sha1, struct strbuf *path, *header.typeflag = TYPEFLAG_REG; mode = (mode | ((mode & 0100) ? 0777 : 0666)) & ~tar_umask; } else { - error("unsupported file mode: 0%o (SHA1: %s)", - mode, sha1_to_hex(sha1)); - return; + return error("unsupported file mode: 0%o (SHA1: %s)", + mode, sha1_to_hex(sha1)); } - if (path->len > sizeof(header.name)) { - int plen = get_path_prefix(path, sizeof(header.prefix)); - int rest = path->len - plen - 1; + if (pathlen > sizeof(header.name)) { + size_t plen = get_path_prefix(path, pathlen, + sizeof(header.prefix)); + size_t rest = pathlen - plen - 1; if (plen > 0 && rest <= sizeof(header.name)) { - memcpy(header.prefix, path->buf, plen); - memcpy(header.name, path->buf + plen + 1, rest); + memcpy(header.prefix, path, plen); + memcpy(header.name, path + plen + 1, rest); } else { sprintf(header.name, "%s.data", sha1_to_hex(sha1)); strbuf_append_ext_header(&ext_header, "path", - path->buf, path->len); + path, pathlen); } } else - memcpy(header.name, path->buf, path->len); + memcpy(header.name, path, pathlen); } if (S_ISLNK(mode) && buffer) { @@ -208,7 +180,7 @@ static void write_entry(const unsigned char *sha1, struct strbuf *path, sprintf(header.mode, "%07o", mode & 07777); sprintf(header.size, "%011lo", S_ISREG(mode) ? size : 0); - sprintf(header.mtime, "%011lo", archive_time); + sprintf(header.mtime, "%011lo", (unsigned long) args->time); sprintf(header.uid, "%07o", 0); sprintf(header.gid, "%07o", 0); @@ -223,28 +195,35 @@ static void write_entry(const unsigned char *sha1, struct strbuf *path, sprintf(header.chksum, "%07o", ustar_header_chksum(&header)); if (ext_header.len > 0) { - write_entry(sha1, NULL, 0, ext_header.buf, ext_header.len); - free(ext_header.buf); + err = write_tar_entry(args, sha1, NULL, 0, 0, ext_header.buf, + ext_header.len); + if (err) + return err; } + strbuf_release(&ext_header); write_blocked(&header, sizeof(header)); if (S_ISREG(mode) && buffer && size > 0) write_blocked(buffer, size); + return err; } -static void write_global_extended_header(const unsigned char *sha1) +static int write_global_extended_header(struct archiver_args *args) { - struct strbuf ext_header; - ext_header.buf = NULL; - ext_header.len = ext_header.alloc = 0; + const unsigned char *sha1 = args->commit_sha1; + struct strbuf ext_header = STRBUF_INIT; + int err; + strbuf_append_ext_header(&ext_header, "comment", sha1_to_hex(sha1), 40); - write_entry(NULL, NULL, 0, ext_header.buf, ext_header.len); - free(ext_header.buf); + err = write_tar_entry(args, NULL, NULL, 0, 0, ext_header.buf, + ext_header.len); + strbuf_release(&ext_header); + return err; } -static int git_tar_config(const char *var, const char *value) +static int git_tar_config(const char *var, const char *value, void *cb) { if (!strcmp(var, "tar.umask")) { - if (!strcmp(value, "user")) { + if (value && !strcmp(value, "user")) { tar_umask = umask(0); umask(tar_umask); } else { @@ -252,72 +231,20 @@ static int git_tar_config(const char *var, const char *value) } return 0; } - return git_default_config(var, value); -} - -static int write_tar_entry(const unsigned char *sha1, - const char *base, int baselen, - const char *filename, unsigned mode, int stage) -{ - static struct strbuf path; - int filenamelen = strlen(filename); - void *buffer; - enum object_type type; - unsigned long size; - - if (!path.alloc) { - path.buf = xmalloc(PATH_MAX); - path.alloc = PATH_MAX; - path.len = path.eof = 0; - } - if (path.alloc < baselen + filenamelen) { - free(path.buf); - path.buf = xmalloc(baselen + filenamelen); - path.alloc = baselen + filenamelen; - } - memcpy(path.buf, base, baselen); - memcpy(path.buf + baselen, filename, filenamelen); - path.len = baselen + filenamelen; - if (S_ISDIR(mode)) { - strbuf_append_string(&path, "/"); - buffer = NULL; - size = 0; - } else { - buffer = read_sha1_file(sha1, &type, &size); - if (!buffer) - die("cannot read %s", sha1_to_hex(sha1)); - } - - write_entry(sha1, &path, mode, buffer, size); - free(buffer); - - return READ_TREE_RECURSIVE; + return git_default_config(var, value, cb); } int write_tar_archive(struct archiver_args *args) { - int plen = args->base ? strlen(args->base) : 0; + int err = 0; - git_config(git_tar_config); - - archive_time = args->time; - verbose = args->verbose; + git_config(git_tar_config, NULL); if (args->commit_sha1) - write_global_extended_header(args->commit_sha1); - - if (args->base && plen > 0 && args->base[plen - 1] == '/') { - char *base = xstrdup(args->base); - int baselen = strlen(base); - - while (baselen > 0 && base[baselen - 1] == '/') - base[--baselen] = '\0'; - write_tar_entry(args->tree->object.sha1, "", 0, base, 040777, 0); - free(base); - } - read_tree_recursive(args->tree, args->base, plen, 0, - args->pathspec, write_tar_entry); - write_trailer(); - - return 0; + err = write_global_extended_header(args); + if (!err) + err = write_archive_entries(args, write_tar_entry); + if (!err) + write_trailer(); + return err; } |