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-rw-r--r--src/logic/linkcmd/slbt_linkcmd_deps.c266
1 files changed, 265 insertions, 1 deletions
diff --git a/src/logic/linkcmd/slbt_linkcmd_deps.c b/src/logic/linkcmd/slbt_linkcmd_deps.c
index 7e72dee..46b989f 100644
--- a/src/logic/linkcmd/slbt_linkcmd_deps.c
+++ b/src/logic/linkcmd/slbt_linkcmd_deps.c
@@ -17,6 +17,7 @@
#include "slibtool_linkcmd_impl.h"
#include "slibtool_mapfile_impl.h"
#include "slibtool_metafile_impl.h"
+#include "slibtool_realpath_impl.h"
#include "slibtool_snprintf_impl.h"
#include "slibtool_visibility_impl.h"
@@ -87,6 +88,254 @@ slbt_hidden int slbt_get_deps_meta(
}
+static int slbt_exec_link_normalize_dep_file(
+ const struct slbt_driver_ctx * dctx,
+ int deps,
+ char (*depfile)[PATH_MAX])
+{
+ int ret;
+ int fdcwd;
+ int fdtgt;
+ char * dot;
+ char * slash;
+ const char * mark;
+ struct slbt_txtfile_ctx * tctx;
+ const char ** pline;
+ char * tgtmark;
+ char * depmark;
+ char * relmark;
+ char * tgtnext;
+ char * depnext;
+ char tgtdir [PATH_MAX];
+ char tgtpath [PATH_MAX];
+ char deppath [PATH_MAX];
+ char pathbuf [PATH_MAX];
+ char depsbuf [PATH_MAX];
+ char relapath[PATH_MAX];
+
+ /* fdcwd */
+ fdcwd = slbt_driver_fdcwd(dctx);
+
+ /* first-pass dependency file */
+ if (slbt_impl_get_txtfile_ctx(dctx,*depfile,deps,&tctx) < 0)
+ return SLBT_NESTED_ERROR(dctx);
+
+ /* second-pass dependency file */
+ dot = strrchr(*depfile,'.');
+ strcpy(dot,".tmp2");
+
+ if ((deps = openat(fdcwd,*depfile,O_RDWR|O_CREAT|O_TRUNC,0644)) < 0) {
+ slbt_lib_free_txtfile_ctx(tctx);
+ return SLBT_SYSTEM_ERROR(dctx,depfile);
+ }
+
+ /* fdtgt */
+ strcpy(tgtdir,*depfile);
+
+ if (!(slash = strrchr(tgtdir,'/')))
+ slash = tgtdir;
+
+ slash[0] = '\0';
+
+ if ((slash = strrchr(tgtdir,'/'))) {
+ slash[0] = '\0';
+ slash++;
+ } else {
+ slash = tgtdir;
+ slash[0] = '.';
+ slash[1] = '/';
+ slash[2] = '\0';
+ }
+
+ if ((slash > tgtdir) && strcmp(slash,".libs")) {
+ close(deps);
+ slbt_lib_free_txtfile_ctx(tctx);
+
+ return SLBT_CUSTOM_ERROR(
+ dctx,
+ SLBT_ERR_FLOW_ERROR);
+ }
+
+ if ((fdtgt = openat(fdcwd,tgtdir,O_DIRECTORY|O_CLOEXEC,0)) < 0) {
+ close(deps);
+ slbt_lib_free_txtfile_ctx(tctx);
+
+ return SLBT_CUSTOM_ERROR(
+ dctx,
+ SLBT_ERR_FLOW_ERROR);
+ }
+
+ if (slbt_realpath(fdcwd,tgtdir,0,tgtpath,sizeof(tgtpath)) < 0) {
+ close(fdtgt);
+ close(deps);
+ slbt_lib_free_txtfile_ctx(tctx);
+
+ return SLBT_CUSTOM_ERROR(
+ dctx,
+ SLBT_ERR_FLOW_ERROR);
+ }
+
+ strcpy(pathbuf,tgtpath);
+
+ /* normalize dependency lines as needed */
+ for (pline=tctx->txtlinev; *pline; pline++) {
+ if ((mark = *pline)) {
+ if ((mark[0] == '-') && (mark[1] == 'L'))
+ mark = &mark[2];
+
+ if ((mark > *pline) && (mark[0] == '/'))
+ mark = *pline;
+ } else {
+ mark = *pline;
+ }
+
+ if (mark > *pline) {
+ if (slbt_realpath(
+ fdtgt,mark,0,deppath,
+ sizeof(deppath)) < 0)
+ mark = *pline;
+
+ else if ((tgtpath[0] != '/') || (deppath[0] != '/'))
+ mark = 0;
+
+ else
+ strcpy(depsbuf,deppath);
+ }
+
+ if ((mark > *pline) && strcmp(tgtpath,deppath)) {
+ tgtmark = tgtpath;
+ depmark = deppath;
+
+ tgtnext = strchr(tgtmark,'/');
+ depnext = strchr(depmark,'/');
+
+ while (tgtnext && depnext) {
+ *tgtnext = '\0';
+ *depnext = '\0';
+
+ if (strcmp(tgtmark,depmark)) {
+ tgtnext = 0;
+ depnext = 0;
+ } else {
+ tgtmark = &tgtnext[1];
+ depmark = &depnext[1];
+
+ if (*tgtmark && *depmark) {
+ tgtnext = strchr(tgtmark,'/');
+ depnext = strchr(depmark,'/');
+ } else {
+ tgtnext = 0;
+ depnext = 0;
+ }
+ }
+ }
+
+ strcpy(tgtmark,&pathbuf[tgtmark-tgtpath]);
+ strcpy(depmark,&depsbuf[depmark-deppath]);
+
+ if ((tgtmark - tgtpath) == (depmark - deppath)) {
+ mark = &depmark[strlen(tgtmark)];
+
+ if ((mark[0] == '/') && !strncmp(tgtmark,depmark,mark-depmark))
+ sprintf(relapath,"-L.%s",mark);
+ else
+ mark = relapath;
+ } else {
+ mark = relapath;
+ }
+
+ if (mark == relapath) {
+ relmark = relapath;
+ relmark += sprintf(relapath,"-L../");
+
+ while ((tgtnext = strchr(tgtmark,'/'))) {
+ tgtmark = &tgtnext[1];
+ relmark += sprintf(relmark,"../");
+ }
+
+ strcpy(relmark,depmark);
+ }
+
+ mark = relapath;
+
+ } else if (mark > *pline) {
+ strcpy(relapath,"-L.");
+ mark = relapath;
+ }
+
+ ret = mark ? slbt_dprintf(deps,"%s\n",mark) : (-1);
+
+ if (ret < 0) {
+ close(deps);
+ close(fdtgt);
+ slbt_lib_free_txtfile_ctx(tctx);
+
+ return mark
+ ? SLBT_SYSTEM_ERROR(dctx,0)
+ : SLBT_NESTED_ERROR(dctx);
+ }
+
+ if (mark == relapath)
+ strcpy(tgtpath,pathbuf);
+ }
+
+ close(fdtgt);
+ slbt_lib_free_txtfile_ctx(tctx);
+
+ return deps;
+}
+
+
+static int slbt_exec_link_compact_dep_file(
+ const struct slbt_driver_ctx * dctx,
+ int deps,
+ char (*depfile)[PATH_MAX])
+{
+ int fdcwd;
+ struct slbt_txtfile_ctx * tctx;
+ const char ** pline;
+ const char ** pcomp;
+ const char * depline;
+ char * dot;
+
+ /* fdcwd */
+ fdcwd = slbt_driver_fdcwd(dctx);
+
+ /* second-pass dependency file */
+ if (slbt_impl_get_txtfile_ctx(dctx,*depfile,deps,&tctx) < 0)
+ return SLBT_NESTED_ERROR(dctx);
+
+ /* second-pass dependency file */
+ dot = strrchr(*depfile,'.');
+ dot[0] = '\0';
+
+ if ((deps = openat(fdcwd,*depfile,O_RDWR|O_CREAT|O_TRUNC,0644)) < 0) {
+ slbt_lib_free_txtfile_ctx(tctx);
+ return SLBT_SYSTEM_ERROR(dctx,depfile);
+ }
+
+ /* iterate, only write unique entries */
+ for (pline=tctx->txtlinev; *pline; pline++) {
+ depline = *pline;
+
+ if ((depline[0] == '-') && (depline[1] == 'L'))
+ for (pcomp=tctx->txtlinev; depline && pcomp<pline; pcomp++)
+ if (!strcmp(*pcomp,depline))
+ depline = 0;
+
+ if (depline && (slbt_dprintf(deps,"%s\n",depline) < 0)) {
+ close(deps);
+ slbt_lib_free_txtfile_ctx(tctx);
+ return SLBT_SYSTEM_ERROR(dctx,0);
+ }
+ }
+
+ slbt_lib_free_txtfile_ctx(tctx);
+
+ return deps;
+}
+
+
slbt_hidden int slbt_exec_link_create_dep_file(
const struct slbt_driver_ctx * dctx,
struct slbt_exec_ctx * ectx,
@@ -96,6 +345,7 @@ slbt_hidden int slbt_exec_link_create_dep_file(
{
int ret;
int deps;
+ int fdtmp;
int slen;
int fdcwd;
char ** parg;
@@ -109,6 +359,7 @@ slbt_hidden int slbt_exec_link_create_dep_file(
bool is_reladir;
char reladir[PATH_MAX];
char depfile[PATH_MAX];
+ char pathbuf[PATH_MAX];
struct stat st;
int ldepth;
int fdyndep;
@@ -119,10 +370,12 @@ slbt_hidden int slbt_exec_link_create_dep_file(
/* depfile */
if (slbt_snprintf(depfile,sizeof(depfile),
- "%s.slibtool.deps",
+ "%s.slibtool.deps.tmp1",
libfilename) < 0)
return SLBT_BUFFER_ERROR(dctx);
+ strcpy(pathbuf,depfile);
+
/* deps */
if ((deps = openat(fdcwd,depfile,O_RDWR|O_CREAT|O_TRUNC,0644)) < 0)
return SLBT_SYSTEM_ERROR(dctx,depfile);
@@ -326,5 +579,16 @@ slbt_hidden int slbt_exec_link_create_dep_file(
}
}
+ if ((fdtmp = slbt_exec_link_normalize_dep_file(dctx,deps,&pathbuf)) < 0)
+ return SLBT_NESTED_ERROR(dctx);
+
+ close(deps);
+
+ if ((deps = slbt_exec_link_compact_dep_file(dctx,fdtmp,&pathbuf)) < 0)
+ return SLBT_NESTED_ERROR(dctx);
+
+ close(deps);
+ close(fdtmp);
+
return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 19:35:22 +0000