112 lines
3.5 KiB
Diff
112 lines
3.5 KiB
Diff
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--- lib/commands/toolcontext.c
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+++ lib/commands/toolcontext.c
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@@ -1336,7 +1336,10 @@
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/*
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* Close and reopen stream on file descriptor fd.
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*/
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-static int _reopen_stream(FILE *stream, int fd, const char *mode, const char *name, FILE **new_stream)
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+#ifdef __GLIBC__
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+#define _reopen_stream(stream, fd, mode, name) __reopen_stream(stream, fd, mode, name, &stream)
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+
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+static int __reopen_stream(FILE *stream, int fd, const char *mode, const char *name, FILE **new_stream)
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{
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int fd_copy, new_fd;
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@@ -1363,6 +1366,9 @@
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return 1;
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}
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+#else
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+#define _reopen_stream(stream, fd, mode, name) (freopen(NULL, mode, stream) != NULL)
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+#endif
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/* Entry point */
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struct cmd_context *create_toolcontext(unsigned is_long_lived,
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@@ -1371,7 +1377,6 @@
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unsigned threaded)
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{
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struct cmd_context *cmd;
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- FILE *new_stream;
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int flags;
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#ifdef M_MMAP_MAX
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@@ -1421,9 +1426,8 @@
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if (is_valid_fd(STDIN_FILENO) &&
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((flags = fcntl(STDIN_FILENO, F_GETFL)) > 0) &&
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(flags & O_ACCMODE) != O_WRONLY) {
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- if (!_reopen_stream(stdin, STDIN_FILENO, "r", "stdin", &new_stream))
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+ if (!_reopen_stream(stdin, STDIN_FILENO, "r", "stdin"))
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goto_out;
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- stdin = new_stream;
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if (setvbuf(stdin, cmd->linebuffer, _IOLBF, linebuffer_size)) {
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log_sys_error("setvbuf", "");
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goto out;
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@@ -1433,9 +1437,8 @@
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if (is_valid_fd(STDOUT_FILENO) &&
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((flags = fcntl(STDOUT_FILENO, F_GETFL)) > 0) &&
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(flags & O_ACCMODE) != O_RDONLY) {
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- if (!_reopen_stream(stdout, STDOUT_FILENO, "w", "stdout", &new_stream))
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+ if (!_reopen_stream(stdout, STDOUT_FILENO, "w", "stdout"))
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goto_out;
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- stdout = new_stream;
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if (setvbuf(stdout, cmd->linebuffer + linebuffer_size,
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_IOLBF, linebuffer_size)) {
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log_sys_error("setvbuf", "");
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@@ -1715,7 +1718,6 @@
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void destroy_toolcontext(struct cmd_context *cmd)
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{
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struct dm_config_tree *cft_cmdline;
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- FILE *new_stream;
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int flags;
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if (cmd->dump_filter && cmd->filter && cmd->filter->dump &&
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@@ -1752,8 +1754,7 @@
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if (is_valid_fd(STDIN_FILENO) &&
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((flags = fcntl(STDIN_FILENO, F_GETFL)) > 0) &&
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(flags & O_ACCMODE) != O_WRONLY) {
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- if (_reopen_stream(stdin, STDIN_FILENO, "r", "stdin", &new_stream)) {
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- stdin = new_stream;
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+ if (_reopen_stream(stdin, STDIN_FILENO, "r", "stdin")) {
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setlinebuf(stdin);
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} else
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cmd->linebuffer = NULL; /* Leave buffer in place (deliberate leak) */
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@@ -1762,8 +1763,7 @@
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if (is_valid_fd(STDOUT_FILENO) &&
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((flags = fcntl(STDOUT_FILENO, F_GETFL)) > 0) &&
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(flags & O_ACCMODE) != O_RDONLY) {
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- if (_reopen_stream(stdout, STDOUT_FILENO, "w", "stdout", &new_stream)) {
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- stdout = new_stream;
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+ if (_reopen_stream(stdout, STDOUT_FILENO, "w", "stdout")) {
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setlinebuf(stdout);
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} else
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cmd->linebuffer = NULL; /* Leave buffer in place (deliberate leak) */
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--- tools/lvmcmdline.c
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+++ tools/lvmcmdline.c
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@@ -1252,7 +1252,7 @@
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int err = is_valid_fd(STDERR_FILENO);
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if (!is_valid_fd(STDIN_FILENO) &&
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- !(stdin = fopen(_PATH_DEVNULL, "r"))) {
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+ !freopen(_PATH_DEVNULL, "r", stdin)) {
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if (err)
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perror("stdin stream open");
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else
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@@ -1262,7 +1262,7 @@
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}
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if (!is_valid_fd(STDOUT_FILENO) &&
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- !(stdout = fopen(_PATH_DEVNULL, "w"))) {
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+ !freopen(_PATH_DEVNULL, "w", stdout)) {
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if (err)
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perror("stdout stream open");
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/* else no stdout */
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@@ -1270,7 +1270,7 @@
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}
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if (!is_valid_fd(STDERR_FILENO) &&
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- !(stderr = fopen(_PATH_DEVNULL, "w"))) {
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+ !freopen(_PATH_DEVNULL, "w", stderr)) {
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printf("stderr stream open: %s\n",
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strerror(errno));
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return 0;
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