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authorEric Andersen1999-10-05 16:24:54 +0000
committerEric Andersen1999-10-05 16:24:54 +0000
commitcc8ed39b240180b58810784f844e253263594ac3 (patch)
tree15feebbb4be9a9168209609f48f0b100f9364420 /coreutils/cp.c
downloadbusybox-cc8ed39b240180b58810784f844e253263594ac3.zip
busybox-cc8ed39b240180b58810784f844e253263594ac3.tar.gz
Initial revision0_29alpha2
Diffstat (limited to 'coreutils/cp.c')
-rw-r--r--coreutils/cp.c89
1 files changed, 89 insertions, 0 deletions
diff --git a/coreutils/cp.c b/coreutils/cp.c
new file mode 100644
index 0000000..078a57c
--- /dev/null
+++ b/coreutils/cp.c
@@ -0,0 +1,89 @@
+#include "internal.h"
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/fcntl.h>
+#include <sys/param.h>
+#include <errno.h>
+
+const char cp_usage[] = "cp [-r] source-file destination-file\n"
+"\t\tcp [-r] source-file [source-file ...] destination-directory\n"
+"\n"
+"\tCopy the source files to the destination.\n"
+"\n"
+"\t-r:\tRecursively copy all files and directories\n"
+"\t\tunder the argument directory.";
+
+extern int
+cp_fn(const struct FileInfo * i)
+{
+ int sourceFd;
+ int destinationFd;
+ const char * destination = i->destination;
+ struct stat destination_stat;
+ int status;
+ char buf[8192];
+ char d[PATH_MAX];
+
+ if ( (i->stat.st_mode & S_IFMT) == S_IFDIR ) {
+ if ( mkdir(destination, i->stat.st_mode & ~S_IFMT)
+ != 0 && errno != EEXIST ) {
+ name_and_error(destination);
+ return 1;
+ }
+ return 0;
+ }
+ if ( (sourceFd = open(i->source, O_RDONLY)) < 0 ) {
+ name_and_error(i->source);
+ return 1;
+ }
+ if ( stat(destination, &destination_stat) == 0 ) {
+ if ( i->stat.st_ino == destination_stat.st_ino
+ && i->stat.st_dev == destination_stat.st_dev ) {
+ fprintf(stderr
+ ,"copy of %s to %s would copy file to itself.\n"
+ ,i->source
+ ,destination);
+ close(sourceFd);
+ return 1;
+ }
+ }
+ /*
+ * If the destination is a directory, create a file within it.
+ */
+ if ( (destination_stat.st_mode & S_IFMT) == S_IFDIR ) {
+ destination = join_paths(
+ d
+ ,i->destination
+ ,&i->source[i->directoryLength]);
+
+ if ( stat(destination, &destination_stat) == 0 ) {
+ if ( i->stat.st_ino == destination_stat.st_ino
+ && i->stat.st_dev == destination_stat.st_dev ) {
+ fprintf(stderr
+ ,"copy of %s to %s would copy file to itself.\n"
+ ,i->source
+ ,destination);
+ close(sourceFd);
+ return 1;
+ }
+ }
+ }
+
+ destinationFd = creat(destination, i->stat.st_mode & 07777);
+
+ while ( (status = read(sourceFd, buf, sizeof(buf))) > 0 ) {
+ if ( write(destinationFd, buf, status) != status ) {
+ name_and_error(destination);
+ close(sourceFd);
+ close(destinationFd);
+ return 1;
+ }
+ }
+ close(sourceFd);
+ close(destinationFd);
+ if ( status < 0 ) {
+ name_and_error(i->source);
+ return 1;
+ }
+ return 0;
+}