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authormidipix <writeonce@midipix.org>2024-05-29 03:10:40 +0000
committermidipix <writeonce@midipix.org>2024-05-29 03:10:40 +0000
commit156e23cd69630cba8dee55eaafae5d33e40c30bc (patch)
tree484ea72e8cad040acc5282ef3f8dde40a7cb9742 /src/driver
parent1fd3f0230d2011bfe00b724d13517ca51f4e63bb (diff)
downloadtpax-156e23cd69630cba8dee55eaafae5d33e40c30bc.tar.bz2
tpax-156e23cd69630cba8dee55eaafae5d33e40c30bc.tar.xz
driver: implemented the -f (archive path) command-line argument.
Diffstat (limited to 'src/driver')
-rw-r--r--src/driver/tpax_driver_ctx.c109
1 files changed, 100 insertions, 9 deletions
diff --git a/src/driver/tpax_driver_ctx.c b/src/driver/tpax_driver_ctx.c
index 6497126..7cae777 100644
--- a/src/driver/tpax_driver_ctx.c
+++ b/src/driver/tpax_driver_ctx.c
@@ -125,19 +125,27 @@ static int tpax_driver_usage_copy_mode(
const char * arg,
const struct argv_option ** optv,
struct argv_meta * meta,
- struct argv_entry * operand)
+ struct argv_entry * operand,
+ struct argv_entry * archive)
{
const char * errdesc;
- if (!operand) {
+ if (archive || !operand) {
tpax_driver_usage(
fdout,program,
arg,optv,meta);
- tpax_dprintf(
- fdout,
- "\nThe copy mode requires a destination "
- "directory argument.\n\n");
+ if (archive) {
+ tpax_dprintf(
+ fdout,
+ "\n%s: the __copy__ mode does not permit specifying "
+ "an archive path.\n\n",program);
+ } else {
+ tpax_dprintf(
+ fdout,
+ "\n%s: the __copy__ mode requires a destination "
+ "directory argument.\n\n",program);
+ }
return TPAX_USAGE;
}
@@ -234,6 +242,42 @@ static int tpax_driver_usage_block_size_range(
return TPAX_USAGE;
}
+static int tpax_driver_error_archive_path(
+ int fdout,
+ const char * program,
+ const char * arg,
+ struct argv_meta * meta,
+ bool fwrite)
+{
+ int lerrno;
+ const char * errstr;
+
+ lerrno = errno;
+ errno = 0;
+
+ errstr = strerror(lerrno);
+ errstr = errno ? "" : errstr;
+ errno = lerrno;
+
+ if (fwrite) {
+ tpax_dprintf(
+ fdout,
+ "%s: archive file <%s> could not be created "
+ "or opened for writing (%s).\n",
+ program,arg,errstr);
+ } else {
+ tpax_dprintf(
+ fdout,
+ "%s: archive file <%s> could not be opened "
+ "for reading (%s).\n",
+ program,arg,errstr);
+ }
+
+ argv_free(meta);
+
+ return TPAX_FATAL;
+}
+
static int tpax_driver_error_not_implemented(
int fdout,
const char * program,
@@ -337,7 +381,9 @@ int tpax_lib_get_driver_ctx(
const struct argv_option * optv[TPAX_OPTV_ELEMENTS];
struct argv_meta * meta;
struct argv_entry * entry;
+ struct argv_entry * archive;
struct argv_entry * operand;
+ struct tpax_fd_ctx lfdctx;
size_t nunits;
const char * program;
int fddst;
@@ -357,6 +403,7 @@ int tpax_lib_get_driver_ctx(
return -1;
nunits = 0;
+ archive = 0;
operand = 0;
program = argv_program_name(argv[0]);
memset(&cctx,0,sizeof(cctx));
@@ -396,6 +443,10 @@ int tpax_lib_get_driver_ctx(
cctx.drvflags |= TPAX_DRIVER_EXEC_MODE_COPY;
break;
+ case TAG_FILE:
+ archive = entry;
+ break;
+
case TAG_FORMAT:
cctx.drvflags &= ~(uint64_t)(TPAX_DRIVER_WRITE_FORMAT_MASK);
@@ -481,11 +532,11 @@ int tpax_lib_get_driver_ctx(
/* copy mode: destination directory */
if (cctx.drvflags & TPAX_DRIVER_EXEC_MODE_COPY) {
- if (!operand)
+ if (archive || !operand)
return tpax_driver_usage_copy_mode(
fdctx->fderr,
program,entry->arg,
- optv,meta,operand);
+ optv,meta,operand,archive);
fddst = openat(
fdctx->fdcwd,
@@ -496,7 +547,42 @@ int tpax_lib_get_driver_ctx(
return tpax_driver_usage_copy_mode(
fdctx->fderr,
program,entry->arg,
- optv,meta,operand);
+ optv,meta,operand,archive);
+ }
+
+ /* archive path */
+ if (archive && (cctx.drvflags & TPAX_DRIVER_EXEC_MODE_WRITE)) {
+ memcpy(&lfdctx,fdctx,sizeof(*fdctx));
+
+ lfdctx.fdout = openat(
+ fdctx->fdcwd,
+ archive->arg,
+ O_WRONLY|O_CREAT|O_TRUNC,
+ 0644);
+
+ if (lfdctx.fdout < 0)
+ return tpax_driver_error_archive_path(
+ fdctx->fderr,
+ program,archive->arg,
+ meta,true);
+
+ fdctx = &lfdctx;
+
+ } else if (archive) {
+ memcpy(&lfdctx,fdctx,sizeof(*fdctx));
+
+ lfdctx.fdin = openat(
+ fdctx->fdcwd,
+ archive->arg,
+ O_RDONLY,0);
+
+ if (lfdctx.fdin < 0)
+ return tpax_driver_error_archive_path(
+ fdctx->fderr,
+ program,archive->arg,
+ meta,false);
+
+ fdctx = &lfdctx;
}
/* not implemented mode(s) */
@@ -555,6 +641,11 @@ int tpax_lib_get_driver_ctx(
return tpax_get_driver_ctx_fail(meta);
}
+ if (archive) {
+ ctx->file = archive->arg;
+ ctx->ctx.file = &ctx->file;
+ }
+
ctx->ctx.program = program;
ctx->ctx.cctx = &ctx->cctx;