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-rw-r--r--toys/pending/tar.c109
1 files changed, 52 insertions, 57 deletions
diff --git a/toys/pending/tar.c b/toys/pending/tar.c
index c2946225..5bceb1a3 100644
--- a/toys/pending/tar.c
+++ b/toys/pending/tar.c
@@ -38,11 +38,9 @@ config TAR
#include "toys.h"
GLOBALS(
- char *fname;
- char *dir;
- struct arg_list *inc_file;
- struct arg_list *exc_file;
- char *tocmd;
+ char *f, *C;
+ struct arg_list *T, *X;
+ char *to_command;
struct arg_list *exc;
struct arg_list *inc, *pass;
@@ -96,7 +94,7 @@ static void copy_in_out(int src, int dst, off_t size)
static void itoo(char *str, int len, off_t val)
{
char *t, tmp[sizeof(off_t)*3+1];
- int cnt = sprintf(tmp, "%0*llo", len, (unsigned long long)val);
+ int cnt = sprintf(tmp, "%0*llo", len, (unsigned long long)val);
t = tmp + cnt - len;
if (*t == '0') t++;
@@ -132,16 +130,16 @@ static void write_longname(struct archive_handler *tar, char *name, char type)
memset(&tmp, 0, sizeof(tmp));
strcpy(tmp.name, "././@LongLink");
- sprintf(tmp.mode, "%0*d", (int)sizeof(tmp.mode)-1, 0);
- sprintf(tmp.uid, "%0*d", (int)sizeof(tmp.uid)-1, 0);
- sprintf(tmp.gid, "%0*d", (int)sizeof(tmp.gid)-1, 0);
- sprintf(tmp.size, "%0*d", (int)sizeof(tmp.size)-1, 0);
- sprintf(tmp.mtime, "%0*d", (int)sizeof(tmp.mtime)-1, 0);
+ memset(tmp.mode, '0', sizeof(tmp.mode)-1);
+ memset(tmp.uid, '0', sizeof(tmp.uid)-1);
+ memset(tmp.gid, '0', sizeof(tmp.gid)-1);
+ memset(tmp.size, '0', sizeof(tmp.size)-1);
+ memset(tmp.mtime, '0', sizeof(tmp.mtime)-1);
itoo(tmp.size, sizeof(tmp.size), sz);
tmp.type = type;
memset(tmp.chksum, ' ', 8);
strcpy(tmp.magic, "ustar ");
- for (i= 0; i < 512; i++) sum += (unsigned int)((char*)&tmp)[i];
+ for (i = 0; i < 512; i++) sum += (unsigned int)((char*)&tmp)[i];
itoo(tmp.chksum, sizeof(tmp.chksum)-1, sum);
writeall(tar->src_fd, (void*) &tmp, sizeof(tmp));
@@ -171,8 +169,7 @@ static void add_file(struct archive_handler *tar, char **nam, struct stat *st)
static int warn = 1;
for (p = name; *p; p++)
- if ((p == name || p[-1] == '/') && *p != '/'
- && filter(TT.exc, p)) return;
+ if ((p == name || p[-1] == '/') && *p != '/' && filter(TT.exc, p)) return;
if (S_ISDIR(st->st_mode) && name[strlen(name)-1] != '/') {
lnk = xmprintf("%s/",name);
@@ -185,8 +182,8 @@ static void add_file(struct archive_handler *tar, char **nam, struct stat *st)
if (!*hname) return;
while ((c = strstr(hname, "../"))) hname = c + 3;
if (warn && hname != name) {
- fprintf(stderr, "removing leading '%.*s' "
- "from member names\n", (int)(hname-name), name);
+ fprintf(stderr, "removing leading '%.*s' from member names\n",
+ (int)(hname-name), name);
warn = 0;
}
@@ -207,14 +204,16 @@ static void add_file(struct archive_handler *tar, char **nam, struct stat *st)
xstrncpy(hdr.link, node->arg, sizeof(hdr.link));
} else if (S_ISREG(st->st_mode)) {
hdr.type = '0';
- if (st->st_size <= (off_t)0777777777777LL)
+ if (st->st_size <= (off_t)077777777777LL)
itoo(hdr.size, sizeof(hdr.size), st->st_size);
else {
- error_msg("can't store file '%s' of size '%lld'\n",
+// TODO: test accept 12 7's but don't emit without terminator
+ error_msg("TODO: need base-256 encoding for '%s' '%lld'\n",
hname, (unsigned long long)st->st_size);
return;
}
} else if (S_ISLNK(st->st_mode)) {
+// TODO: test preserve symlink ownership
hdr.type = '2'; //'K' long link
if (!(lnk = xreadlink(name))) {
perror_msg("readlink");
@@ -247,9 +246,9 @@ static void add_file(struct archive_handler *tar, char **nam, struct stat *st)
else snprintf(hdr.gname, sizeof(hdr.gname), "%d", st->st_gid);
//calculate chksum.
- for (i= 0; i < 512; i++) sum += (unsigned int)((char*)&hdr)[i];
+ for (i = 0; i < 512; i++) sum += ((char*)&hdr)[i];
itoo(hdr.chksum, sizeof(hdr.chksum)-1, sum);
- if (toys.optflags & FLAG_v) printf("%s\n",hname);
+ if (FLAG(v)) printf("%s\n",hname);
writeall(tar->src_fd, (void*)&hdr, 512);
//write actual data to archive
@@ -269,18 +268,18 @@ static int add_to_tar(struct dirtree *node)
char *path;
struct archive_handler *hdl = (struct archive_handler*)TT.handle;
+ if (!dirtree_notdotdot(node)) return 0;
if (!fstat(hdl->src_fd, &st) && st.st_dev == node->st.st_dev
&& st.st_ino == node->st.st_ino) {
- error_msg("'%s' file is the archive; not dumped", TT.fname);
- return ((DIRTREE_RECURSE | ((toys.optflags & FLAG_h)?DIRTREE_SYMFOLLOW:0)));
+ error_msg("'%s' file is the archive; not dumped", TT.f);
+ return 0;
}
- if (!dirtree_notdotdot(node)) return 0;
path = dirtree_path(node, 0);
add_file(hdl, &path, &(node->st)); //path may be modified
free(path);
- if (toys.optflags & FLAG_no_recursion) return 0;
- return ((DIRTREE_RECURSE | ((toys.optflags & FLAG_h)?DIRTREE_SYMFOLLOW:0)));
+ if (FLAG(no_recursion)) return 0;
+ return ((DIRTREE_RECURSE | (FLAG(h)?DIRTREE_SYMFOLLOW:0)));
}
static void compress_stream(struct archive_handler *tar_hdl)
@@ -295,7 +294,7 @@ static void compress_stream(struct archive_handler *tar_hdl)
if (cpid == -1) perror_exit("fork");
if (!cpid) { /* Child reads from pipe */
- char *argv[] = {(toys.optflags&FLAG_z)?"gzip":"bzip2", "-f", NULL};
+ char *argv[] = {FLAG(z)?"gzip":"bzip2", "-f", NULL};
xclose(pipefd[1]); /* Close unused write*/
dup2(pipefd[0], 0);
dup2(tar_hdl->src_fd, 1); //write to tar fd
@@ -327,7 +326,7 @@ static void extract_to_command(struct archive_handler *tar)
if (cpid == -1) perror_exit("fork");
if (!cpid) { // Child reads from pipe
- char buf[64], *argv[4] = {"sh", "-c", TT.tocmd, NULL};
+ char buf[64], *argv[4] = {"sh", "-c", TT.to_command, NULL};
setenv("TAR_FILETYPE", "f", 1);
sprintf(buf, "%0o", file_hdr->mode);
@@ -385,12 +384,9 @@ static void extract_to_disk(struct archive_handler *tar)
}
//remove old file, if exists
- if (!(toys.optflags & FLAG_k) && !S_ISDIR(file_hdr->mode)
- && !lstat( file_hdr->name, &ex)) {
- if (unlink(file_hdr->name)) {
- perror_msg("can't remove: %s",file_hdr->name);
- }
- }
+ if (!FLAG(k) && !S_ISDIR(file_hdr->mode) && !lstat(file_hdr->name, &ex))
+ if (unlink(file_hdr->name))
+ perror_msg("can't remove: %s", file_hdr->name);
//hard link
if (S_ISREG(file_hdr->mode) && file_hdr->link_target) {
@@ -402,7 +398,7 @@ static void extract_to_disk(struct archive_handler *tar)
switch (file_hdr->mode & S_IFMT) {
case S_IFREG:
flags = O_WRONLY|O_CREAT|O_EXCL;
- if (toys.optflags & FLAG_overwrite) flags = O_WRONLY|O_CREAT|O_TRUNC;
+ if (FLAG(overwrite)) flags = O_WRONLY|O_CREAT|O_TRUNC;
dst_fd = open(file_hdr->name, flags, file_hdr->mode & 07777);
if (dst_fd == -1) perror_msg("%s: can't open", file_hdr->name);
break;
@@ -432,12 +428,12 @@ COPY:
close(dst_fd);
if (S_ISLNK(file_hdr->mode)) return;
- if (!(toys.optflags & FLAG_o)) {
+ if (!FLAG(o)) {
//set ownership..., --no-same-owner, --numeric-owner
uid_t u = file_hdr->uid;
gid_t g = file_hdr->gid;
- if (!(toys.optflags & FLAG_numeric_owner)) {
+ if (!FLAG(numeric_owner)) {
struct group *gr = getgrnam(file_hdr->gname);
struct passwd *pw = getpwnam(file_hdr->uname);
if (pw) u = pw->pw_uid;
@@ -447,11 +443,11 @@ COPY:
perror_msg("chown %d:%d '%s'", u, g, file_hdr->name);;
}
- if (toys.optflags & FLAG_p) // || !(toys.optflags & FLAG_no_same_permissions))
+ if (FLAG(p)) // || !FLAG(no_same_permissions))
chmod(file_hdr->name, file_hdr->mode);
//apply mtime
- if (!(toys.optflags & FLAG_m)) {
+ if (!FLAG(m)) {
struct timeval times[2] = {{file_hdr->mtime, 0},{file_hdr->mtime, 0}};
utimes(file_hdr->name, times);
}
@@ -518,7 +514,7 @@ static void extract_stream(struct archive_handler *tar_hdl)
if (!cpid) { /* Child reads from pipe */
char *argv[] =
- {(toys.optflags&FLAG_z)?"gunzip":"bunzip2", "-cf", "-", NULL};
+ {FLAG(z)?"gunzip":"bunzip2", "-cf", "-", NULL};
xclose(pipefd[0]); /* Close unused read*/
dup2(tar_hdl->src_fd, 0);
dup2(pipefd[1], 1); //write to pipe
@@ -727,8 +723,8 @@ CHECK_MAGIC:
(TT.inc && !filter(TT.inc, file_hdr->name))) goto SKIP;
add_to_list(&TT.pass, xstrdup(file_hdr->name));
- if (toys.optflags & FLAG_t) {
- if (toys.optflags & FLAG_v) {
+ if (FLAG(t)) {
+ if (FLAG(v)) {
char perm[11];
struct tm *lc = localtime((const time_t*)&(file_hdr->mtime));
@@ -743,7 +739,7 @@ CHECK_MAGIC:
SKIP:
tar_skip(tar_hdl, file_hdr->size);
} else {
- if (toys.optflags & FLAG_v) printf("%s\n",file_hdr->name);
+ if (FLAG(v)) printf("%s\n",file_hdr->name);
tar_hdl->extract_handler(tar_hdl);
}
free(file_hdr->name);
@@ -765,40 +761,39 @@ void tar_main(void)
for (tmp = TT.exc; tmp; tmp = tmp->next)
tmp->arg = xstrdup(tmp->arg); //freeing at the end fails otherwise
- while(*args) add_to_list(&TT.inc, xstrdup(*args++));
- if (toys.optflags & FLAG_X) add_from_file(&TT.exc, TT.exc_file);
- if (toys.optflags & FLAG_T) add_from_file(&TT.inc, TT.inc_file);
+ while (*args) add_to_list(&TT.inc, xstrdup(*args++));
+ if (TT.X) add_from_file(&TT.exc, TT.X);
+ if (TT.T) add_from_file(&TT.inc, TT.T);
- if (toys.optflags & FLAG_c) {
+ if (FLAG(c)) {
if (!TT.inc) error_exit("empty archive");
fd = 1;
}
- if ((toys.optflags & FLAG_f) && strcmp(TT.fname, "-"))
- fd = xcreate(TT.fname, fd*(O_WRONLY|O_CREAT|O_TRUNC), 0666);
- if (toys.optflags & FLAG_C) xchdir(TT.dir);
+ if (TT.f && strcmp(TT.f, "-"))
+ fd = xcreate(TT.f, fd*(O_WRONLY|O_CREAT|O_TRUNC), 0666);
+ if (TT.C) xchdir(TT.C);
tar_hdl = init_handler();
tar_hdl->src_fd = fd;
- if ((toys.optflags & FLAG_x) || (toys.optflags & FLAG_t)) {
- if (toys.optflags & FLAG_O) tar_hdl->extract_handler = extract_to_stdout;
- if (toys.optflags & FLAG_to_command) {
+ if (FLAG(x) || FLAG(t)) {
+ if (FLAG(O)) tar_hdl->extract_handler = extract_to_stdout;
+ if (FLAG(to_command)) {
signal(SIGPIPE, SIG_IGN); //will be using pipe between child & parent
tar_hdl->extract_handler = extract_to_command;
}
- if (toys.optflags & FLAG_z) extract_stream(tar_hdl);
+ if (FLAG(z)) extract_stream(tar_hdl);
unpack_tar(tar_hdl);
for (tmp = TT.inc; tmp; tmp = tmp->next)
if (!filter(TT.exc, tmp->arg) && !filter(TT.pass, tmp->arg))
error_msg("'%s' not in archive", tmp->arg);
- } else if (toys.optflags & FLAG_c) {
+ } else if (FLAG(c)) {
//create the tar here.
- if (toys.optflags & (FLAG_j|FLAG_z)) compress_stream(tar_hdl);
+ if (FLAG(j)||FLAG(z)) compress_stream(tar_hdl);
for (tmp = TT.inc; tmp; tmp = tmp->next) {
TT.handle = tar_hdl;
//recurse thru dir and add files to archive
- dirtree_flagread(tmp->arg, DIRTREE_SYMFOLLOW*!!(toys.optflags&FLAG_h),
- add_to_tar);
+ dirtree_flagread(tmp->arg, FLAG(h)?DIRTREE_SYMFOLLOW:0, add_to_tar);
}
memset(toybuf, 0, 1024);
writeall(tar_hdl->src_fd, toybuf, 1024);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-26 23:59:22 +0000