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authormidipix <writeonce@midipix.org>2018-08-04 00:59:53 +0000
committermidipix <writeonce@midipix.org>2018-08-03 21:13:31 -0400
commit8a432812c5faa1cb735caab938fb532e62b78be7 (patch)
treebe73da218894d780eaaa04776b19788b3543f394 /src
parent285481de41269955229e931b92f8916783d11482 (diff)
downloadmdso-8a432812c5faa1cb735caab938fb532e62b78be7.tar.bz2
mdso-8a432812c5faa1cb735caab938fb532e62b78be7.tar.xz
driver: int mdso_stdin_to_tmp(): re-implemented with pure fdio.
Diffstat (limited to 'src')
-rw-r--r--src/driver/mdso_unit_ctx.c83
1 files changed, 43 insertions, 40 deletions
diff --git a/src/driver/mdso_unit_ctx.c b/src/driver/mdso_unit_ctx.c
index 01ef303..97c5041 100644
--- a/src/driver/mdso_unit_ctx.c
+++ b/src/driver/mdso_unit_ctx.c
@@ -35,56 +35,66 @@ static int mdso_free_unit_ctx_impl(struct mdso_unit_ctx_impl * ctx, int status)
return status;
}
-static FILE * mdso_stdin_to_tmp(const struct mdso_driver_ctx * dctx)
+static int mdso_stdin_to_tmp(const struct mdso_driver_ctx * dctx)
{
struct mdso_driver_ctx_impl * ictx;
uintptr_t addr;
int fdtmp;
- FILE * ftmp;
+ ssize_t ret;
+ ssize_t cnt;
+ char * ch;
char buf[4096];
- ssize_t nread;
- int ret;
+ char template[] = "/tmp/mdso_stdin_to_tmp_XXXXXX";
addr = (uintptr_t)dctx - offsetof(struct mdso_driver_ctx_impl,ctx);
ictx = (struct mdso_driver_ctx_impl *)addr;
- if (ictx->fdtmpin >= 0) {
- if ((fdtmp = dup(ictx->fdtmpin)) < 0)
- return 0;
+ if (ictx->fdtmpin >= 0)
+ return dup(ictx->fdtmpin);
- if (!(ftmp = fdopen(fdtmp,"r")))
- close(fdtmp);
+ if ((fdtmp = mkstemp(template)) < 0)
+ return -1;
- return ftmp;
+ if ((ictx->fdtmpin = dup(fdtmp)) < 0) {
+ close(fdtmp);
+ return -1;
}
- if (!(ftmp = tmpfile()))
- return 0;
+ while (1) {
+ ret = read(0,buf,sizeof(buf)-1);
- if ((ictx->fdtmpin = dup(fileno(ftmp))) < 0) {
- fclose(ftmp);
- return 0;
- }
+ while ((ret < 0) && (errno == EINTR))
+ ret = read(0,buf,sizeof(buf)-1);
- nread = read(0,buf,sizeof(buf)-1);
+ if (ret < 0) {
+ close(fdtmp);
+ return -1;
- while (nread) {
- if (nread > 0) {
- buf[nread] = '\0';
- ret = fputs(buf,ftmp);
- } else
- ret = (errno == EINTR) ? 0 : -1;
+ } else if (ret == 0) {
+ return fdtmp;
- if (ret < 0) {
- fclose(ftmp);
- return 0;
- }
+ } else {
+ ch = buf;
+ cnt = ret;
+ ret = 0;
- nread = read(0,buf,sizeof(buf)-1);
- }
+ for (; cnt; ) {
+ ret = write(fdtmp,ch,cnt);
- return ftmp;
+ while ((ret < 0) && (errno == EINTR))
+ ret = write(fdtmp,ch,cnt);
+
+ if (ret < 0) {
+ close(fdtmp);
+ return -1;
+ }
+
+ ch += ret;
+ cnt -= ret;
+ }
+ }
+ }
}
static int mdso_create_symbol_vector(struct mdso_unit_ctx_impl * ctx)
@@ -186,7 +196,6 @@ int mdso_get_unit_ctx(
struct mdso_unit_ctx ** pctx)
{
struct mdso_unit_ctx_impl * ctx;
- FILE * ftmp;
int fd;
if (!dctx)
@@ -201,22 +210,15 @@ int mdso_get_unit_ctx(
if (strcmp(path,"-"))
fd = -1;
- else if (!(ftmp = mdso_stdin_to_tmp(dctx)))
+ else if ((fd = mdso_stdin_to_tmp(dctx)) < 0)
return mdso_free_unit_ctx_impl(
ctx,MDSO_FILE_ERROR(dctx));
- else if ((fd = dup(fileno(ftmp))) < 0)
- return mdso_free_unit_ctx_impl(
- ctx,MDSO_SYSTEM_ERROR(dctx));
-
- else
- fclose(ftmp);
-
if (mdso_map_input(dctx,fd,path,PROT_READ,&ctx->map))
return mdso_free_unit_ctx_impl(
ctx,MDSO_NESTED_ERROR(dctx));
- if (fd > 0)
+ if (fd >= 0)
close(fd);
if (mdso_create_symbol_vector(ctx))
@@ -235,6 +237,7 @@ int mdso_get_unit_ctx(
ctx->uctx.stype = ctx->expsyms->stype;
*pctx = &ctx->uctx;
+
return 0;
}