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| author | Alejandro Colomar <alx@kernel.org> | 2024-07-20 12:28:00 +0200 |
|---|---|---|
| committer | Alejandro Colomar <alx@kernel.org> | 2024-07-20 12:55:42 +0200 |
| commit | 9f353db4412b740ae8e66e590e47b69d09e6725d (patch) | |
| tree | 265e21d2e29cde5a5ea6ad5a10043c2adef01f07 | |
| parent | ca5cb657979bd4c10fbfeb7ba87929adcab5e3c6 (diff) | |
| download | man-pages-9f353db4412b740ae8e66e590e47b69d09e6725d.tar.gz | |
getutent.3: EXAMPLES: Add missing error handling
Reported-by: gcc(1) (`make build-ex-cc`)
Signed-off-by: Alejandro Colomar <alx@kernel.org>
| -rw-r--r-- | man/man3/getutent.3 | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/man/man3/getutent.3 b/man/man3/getutent.3 index 656a52cd26..b783f9f59a 100644 --- a/man/man3/getutent.3 +++ b/man/man3/getutent.3 @@ -308,6 +308,7 @@ and .P .\" SRC BEGIN (getutent.c) .EX +#include <err.h> #include <pwd.h> #include <stdlib.h> #include <string.h> @@ -320,7 +321,8 @@ main(void) { struct utmp entry; \& - system("echo before adding entry:;who"); + if (system("echo before adding entry:;who") == \-1) + err(EXIT_FAILURE, "system"); \& entry.ut_type = USER_PROCESS; entry.ut_pid = getpid(); @@ -332,18 +334,22 @@ main(void) memset(entry.ut_host, 0, UT_HOSTSIZE); entry.ut_addr = 0; setutent(); - pututline(&entry); + if (pututline(&entry) == NULL) + err(EXIT_FAILURE, "pututline"); \& - system("echo after adding entry:;who"); + if (system("echo after adding entry:;who") == \-1) + err(EXIT_FAILURE, "system"); \& entry.ut_type = DEAD_PROCESS; memset(entry.ut_line, 0, UT_LINESIZE); entry.ut_time = 0; memset(entry.ut_user, 0, UT_NAMESIZE); setutent(); - pututline(&entry); + if (pututline(&entry) == NULL) + err(EXIT_FAILURE, "pututline"); \& - system("echo after removing entry:;who"); + if (system("echo after removing entry:;who") == \-1) + err(EXIT_FAILURE, "system"); \& endutent(); exit(EXIT_SUCCESS); |