From 55944e5e40b1be2afc4855d8d2baf4b73d1876b5 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 10 Apr 2024 22:49:52 +0200 Subject: Adding upstream version 255.4. Signed-off-by: Daniel Baumann --- man/journal-iterate-wait.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 man/journal-iterate-wait.c (limited to 'man/journal-iterate-wait.c') diff --git a/man/journal-iterate-wait.c b/man/journal-iterate-wait.c new file mode 100644 index 0000000..ac4b60b --- /dev/null +++ b/man/journal-iterate-wait.c @@ -0,0 +1,45 @@ +/* SPDX-License-Identifier: MIT-0 */ + +#include +#include +#include + +int main(int argc, char *argv[]) { + int r; + sd_journal *j; + r = sd_journal_open(&j, SD_JOURNAL_LOCAL_ONLY); + if (r < 0) { + errno = -r; + fprintf(stderr, "Failed to open journal: %m\n"); + return 1; + } + for (;;) { + const void *d; + size_t l; + r = sd_journal_next(j); + if (r < 0) { + errno = -r; + fprintf(stderr, "Failed to iterate to next entry: %m\n"); + break; + } + if (r == 0) { + /* Reached the end, let's wait for changes, and try again */ + r = sd_journal_wait(j, (uint64_t) -1); + if (r < 0) { + errno = -r; + fprintf(stderr, "Failed to wait for changes: %m\n"); + break; + } + continue; + } + r = sd_journal_get_data(j, "MESSAGE", &d, &l); + if (r < 0) { + errno = -r; + fprintf(stderr, "Failed to read message field: %m\n"); + continue; + } + printf("%.*s\n", (int) l, (const char*) d); + } + sd_journal_close(j); + return 0; +} -- cgit v1.2.3