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From: Spencer O. <nt...@us...> - 2001-09-17 00:00:00
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SYS_FLEN would be called before a write on a descriptor to check its size.
Currently lseek would fail with -1 when given the stdout/stderr descriptor.
Changing to use fstat seems to be the standard way of handling this.
Signed-off-by: Spencer Oliver <nt...@us...>
---
src/helper/system.h | 2 ++
src/target/arm_semihosting.c | 12 ++++--------
2 files changed, 6 insertions(+), 8 deletions(-)
diff --git a/src/helper/system.h b/src/helper/system.h
index 169df1c..af19d01 100644
--- a/src/helper/system.h
+++ b/src/helper/system.h
@@ -50,6 +50,8 @@
#ifdef _WIN32
#include <winsock2.h>
#include <ws2tcpip.h>
+#include <sys/types.h>
+#include <sys/stat.h>
#endif
// --- platform specific headers ---
diff --git a/src/target/arm_semihosting.c b/src/target/arm_semihosting.c
index f4244c8..1d0acd6 100644
--- a/src/target/arm_semihosting.c
+++ b/src/target/arm_semihosting.c
@@ -230,18 +230,14 @@ static int do_semihosting(struct target *target)
return retval;
else {
int fd = target_buffer_get_u32(target, params+0);
- off_t cur = lseek(fd, 0, SEEK_CUR);
- if (cur == (off_t)-1) {
+ struct stat buf;
+ result = fstat(fd, &buf);
+ if (result == -1) {
armv4_5->semihosting_errno = errno;
result = -1;
break;
}
- result = lseek(fd, 0, SEEK_END);
- armv4_5->semihosting_errno = errno;
- if (lseek(fd, cur, SEEK_SET) == (off_t)-1) {
- armv4_5->semihosting_errno = errno;
- result = -1;
- }
+ result = buf.st_size;
}
break;
--
1.6.5.1.1367.gcd48
--------------040706080807030202010705--
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