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authormidipix <writeonce@midipix.org>2020-01-31 19:42:07 -0500
committermidipix <writeonce@midipix.org>2020-05-23 05:59:02 +0000
commit239ac5c3f246a737d7b70817319a37d6cece8a69 (patch)
tree73f811b95a22759acee5c72127a66e36d5ce0a13
parent7a9a40611a0e20eb40b15aefdd3de2e12e9cc9de (diff)
downloadtpax-239ac5c3f246a737d7b70817319a37d6cece8a69.tar.bz2
tpax-239ac5c3f246a737d7b70817319a37d6cece8a69.tar.xz
driver: tpax_get_unit_ctx(): implemented the non-recursive bits.
-rw-r--r--include/tpax/tpax.h4
-rw-r--r--src/driver/tpax_unit_ctx.c29
-rw-r--r--src/internal/tpax_driver_impl.h13
3 files changed, 45 insertions, 1 deletions
diff --git a/include/tpax/tpax.h b/include/tpax/tpax.h
index 8c45468..a06a1e5 100644
--- a/include/tpax/tpax.h
+++ b/include/tpax/tpax.h
@@ -119,6 +119,10 @@ struct tpax_driver_ctx {
struct tpax_unit_ctx {
const char * const * path;
+ const char * const * link;
+ const struct tpax_ustar_header *uhdr;
+ const struct tpax_cpio_header * chdr;
+ const struct stat * st;
void * any;
};
diff --git a/src/driver/tpax_unit_ctx.c b/src/driver/tpax_unit_ctx.c
index a6a91b6..a94bf05 100644
--- a/src/driver/tpax_unit_ctx.c
+++ b/src/driver/tpax_unit_ctx.c
@@ -8,11 +8,13 @@
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
-#include <sys/mman.h>
+#include <fcntl.h>
+#include <sys/stat.h>
#include <tpax/tpax.h>
#include "tpax_driver_impl.h"
#include "tpax_errinfo_impl.h"
+#include "tpax_readlink_impl.h"
static int tpax_free_unit_ctx_impl(struct tpax_unit_ctx_impl * ctx, int ret)
{
@@ -28,6 +30,7 @@ int tpax_get_unit_ctx(
const char * path,
struct tpax_unit_ctx ** pctx)
{
+ int ret;
struct tpax_unit_ctx_impl * ctx;
if (!dctx)
@@ -40,8 +43,32 @@ int tpax_get_unit_ctx(
tpax_driver_set_ectx(
dctx,0,path);
+ if (dctx->cctx->drvflags & TPAX_DRIVER_EXEC_MODE_WRITE_COPY) {
+ ret = fstatat(
+ tpax_driver_fdcwd(dctx),path,
+ &ctx->st,AT_SYMLINK_NOFOLLOW);
+
+ if (ret < 0) {
+ free(ctx);
+ return TPAX_SYSTEM_ERROR(dctx);
+ }
+ }
+
+ if (S_ISLNK(ctx->st.st_mode)) {
+ if (tpax_readlink(
+ path,ctx->linkbuf,
+ sizeof(ctx->linkbuf)) < 0) {
+ free(ctx);
+ return TPAX_SYSTEM_ERROR(dctx);
+ }
+ }
+
ctx->path = path;
+ ctx->link = ctx->linkbuf;
+
ctx->uctx.path = &ctx->path;
+ ctx->uctx.link = &ctx->link;
+ ctx->uctx.st = &ctx->st;
*pctx = &ctx->uctx;
diff --git a/src/internal/tpax_driver_impl.h b/src/internal/tpax_driver_impl.h
index 74af288..5f98415 100644
--- a/src/internal/tpax_driver_impl.h
+++ b/src/internal/tpax_driver_impl.h
@@ -9,14 +9,20 @@
#include <stdint.h>
#include <stdio.h>
+#include <sys/stat.h>
#include <sys/types.h>
#include <tpax/tpax.h>
+#include <tpax/tpax_specs.h>
#include "tpax_dprintf_impl.h"
#include "argv/argv.h"
#define TPAX_OPTV_ELEMENTS 64
+#define TPAX_DRIVER_EXEC_MODE_WRITE_COPY \
+ (TPAX_DRIVER_EXEC_MODE_WRITE | \
+ TPAX_DRIVER_EXEC_MODE_COPY)
+
extern const struct argv_option tpax_default_options[];
enum app_tags {
@@ -47,6 +53,13 @@ struct tpax_driver_ctx_impl {
struct tpax_unit_ctx_impl {
const char * path;
struct tpax_unit_ctx uctx;
+ struct stat st;
+ const char * link;
+ char linkbuf[1024];
+ union {
+ struct tpax_ustar_header uhdr;
+ struct tpax_cpio_header chdr;
+ } hdrbufs;
};