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unpack: ignore entry if already exists. 

--HG--
extra : convert_revision : 7f570822db932d4ae45896e2981a9d8ff41824da
This commit is contained in:
Juan RP 2009-02-16 22:18:40 +01:00
parent a679f70c55
commit 524551eee8
1 changed files with 31 additions and 3 deletions
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34
lib/unpack.c
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@ -31,6 +31,7 @@
#include <limits.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <xbps_api.h>
@ -157,10 +158,11 @@ unpack_archive_fini(struct archive *ar, const char *destdir,
prop_dictionary_t pkg)
{
struct archive_entry *entry;
struct stat st;
size_t len;
const char *prepost = "./XBPS_PREPOST_INSTALL";
const char *pkgname, *version;
char *buf;
char *buf, *path;
int rv = 0, flags = 0;
bool actgt = false;
@ -191,6 +193,25 @@ unpack_archive_fini(struct archive *ar, const char *destdir,
}
while (archive_read_next_header(ar, &entry) == ARCHIVE_OK) {
/*
* Check that entry doesn't already exist.
*/
path = xbps_append_full_path(false, destdir,
archive_entry_pathname(entry));
if (path == NULL) {
rv = ENOMEM;
break;
}
rv = stat(path, &st);
if (rv == 0) {
rv = EEXIST;
free(path);
printf(" Not overwriting %s\n", archive_entry_pathname(entry));
continue;
}
free(path);
/*
* Run the pre installation action target if there's a script
* before writing data to disk.
@ -200,7 +221,8 @@ unpack_archive_fini(struct archive *ar, const char *destdir,
archive_entry_set_pathname(entry, buf);
if ((rv = archive_read_extract(ar, entry, flags)) != 0)
rv = archive_read_extract(ar, entry, flags);
if (rv != 0 && rv != EEXIST)
break;
if ((rv = xbps_file_exec(buf, destdir, "pre",
@ -217,11 +239,17 @@ unpack_archive_fini(struct archive *ar, const char *destdir,
/*
* Extract all data from the archive now.
*/
if ((rv = archive_read_extract(ar, entry, flags)) != 0) {
rv = archive_read_extract(ar, entry, flags);
if (rv != 0 && rv != EEXIST) {
printf("\ncouldn't unpack %s (%s), exiting!\n",
archive_entry_pathname(entry), strerror(errno));
(void)fflush(stdout);
break;
} else if (rv == EEXIST) {
printf("\nignoring existent component %s.\n",
archive_entry_pathname(entry));
(void)fflush(stdout);
continue;
}
}