forked from rpms/glibc
84 lines
2.6 KiB
Diff
84 lines
2.6 KiB
Diff
|
commit cea56af185eae45b1f0963351e3d4daa1cbde521
|
||
|
|
Author: Florian Weimer <fweimer@redhat.com>
|
||
|
|
Date: Thu Apr 2 17:09:36 2020 +0200
|
||
|
|
|
||
|
|
support: Change xgetline to return 0 on EOF
|
||
|
|
|
||
|
|
The advantage is that the buffer will always contain the number
|
||
|
|
of characters as returned from the function, which allows one to use
|
||
|
|
a sequence like
|
||
|
|
|
||
|
|
/* No more audit module output. */
|
||
|
|
line_length = xgetline (&buffer, &buffer_length, fp);
|
||
|
|
TEST_COMPARE_BLOB ("", 0, buffer, line_length);
|
||
|
|
|
||
|
|
to check for an expected EOF, while also reporting any unexpected
|
||
|
|
extra data encountered.
|
||
|
|
|
||
|
|
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
|
||
|
|
|
||
|
|
diff --git a/support/support_process_state.c b/support/support_process_state.c
|
||
|
|
index 76dc798728ece0d9..e303c78fc874b2f9 100644
|
||
|
|
--- a/support/support_process_state.c
|
||
|
|
+++ b/support/support_process_state.c
|
||
|
|
@@ -59,7 +59,7 @@ support_process_state_wait (pid_t pid, enum support_process_state state)
|
||
|
|
for (;;)
|
||
|
|
{
|
||
|
|
char cur_state = -1;
|
||
|
|
- while (xgetline (&line, &linesiz, fstatus) != -1)
|
||
|
|
+ while (xgetline (&line, &linesiz, fstatus) > 0)
|
||
|
|
if (strncmp (line, "State:", strlen ("State:")) == 0)
|
||
|
|
{
|
||
|
|
TEST_COMPARE (sscanf (line, "%*s %c", &cur_state), 1);
|
||
|
|
diff --git a/support/xgetline.c b/support/xgetline.c
|
||
|
|
index 180bc2db95a9c5d4..d91c09ac108b4c75 100644
|
||
|
|
--- a/support/xgetline.c
|
||
|
|
+++ b/support/xgetline.c
|
||
|
|
@@ -18,16 +18,22 @@
|
||
|
|
|
||
|
|
#include <support/xstdio.h>
|
||
|
|
#include <support/check.h>
|
||
|
|
-#include <errno.h>
|
||
|
|
|
||
|
|
-ssize_t
|
||
|
|
+size_t
|
||
|
|
xgetline (char **lineptr, size_t *n, FILE *stream)
|
||
|
|
{
|
||
|
|
- int old_errno = errno;
|
||
|
|
- errno = 0;
|
||
|
|
- size_t ret = getline (lineptr, n, stream);
|
||
|
|
- if (!feof (stream) && ferror (stream))
|
||
|
|
- FAIL_EXIT1 ("getline failed: %m");
|
||
|
|
- errno = old_errno;
|
||
|
|
+ TEST_VERIFY (!ferror (stream));
|
||
|
|
+ ssize_t ret = getline (lineptr, n, stream);
|
||
|
|
+ if (ferror (stream))
|
||
|
|
+ {
|
||
|
|
+ TEST_VERIFY (ret < 0);
|
||
|
|
+ FAIL_EXIT1 ("getline: %m");
|
||
|
|
+ }
|
||
|
|
+ if (feof (stream))
|
||
|
|
+ {
|
||
|
|
+ TEST_VERIFY (ret <= 0);
|
||
|
|
+ return 0;
|
||
|
|
+ }
|
||
|
|
+ TEST_VERIFY (ret > 0);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
diff --git a/support/xstdio.h b/support/xstdio.h
|
||
|
|
index 9446b1f27b0f881e..36071cf78822ec8d 100644
|
||
|
|
--- a/support/xstdio.h
|
||
|
|
+++ b/support/xstdio.h
|
||
|
|
@@ -27,7 +27,10 @@ __BEGIN_DECLS
|
||
|
|
FILE *xfopen (const char *path, const char *mode);
|
||
|
|
void xfclose (FILE *);
|
||
|
|
|
||
|
|
-ssize_t xgetline (char **lineptr, size_t *n, FILE *stream);
|
||
|
|
+/* Read a line from FP, using getline. *BUFFER must be NULL, or a
|
||
|
|
+ heap-allocated pointer of *LENGTH bytes. Return the number of
|
||
|
|
+ bytes in the line if a line was read, or 0 on EOF. */
|
||
|
|
+size_t xgetline (char **lineptr, size_t *n, FILE *stream);
|
||
|
|
|
||
|
|
__END_DECLS
|
||
|
|
|