diff options
Diffstat (limited to 'src/shared/pager.c')
| -rw-r--r-- | src/shared/pager.c | 27 |
1 files changed, 13 insertions, 14 deletions
diff --git a/src/shared/pager.c b/src/shared/pager.c index 41da820938..d8f0fb404d 100644 --- a/src/shared/pager.c +++ b/src/shared/pager.c @@ -48,24 +48,27 @@ noreturn static void pager_fallback(void) { } int pager_open(bool jump_to_end) { - int fd[2]; + _cleanup_close_pair_ int fd[2] = { -1, -1 }; const char *pager; pid_t parent_pid; - int r; if (pager_pid > 0) return 1; - if ((pager = getenv("SYSTEMD_PAGER")) || (pager = getenv("PAGER"))) - if (!*pager || streq(pager, "cat")) - return 0; - if (!on_tty()) return 0; + pager = getenv("SYSTEMD_PAGER"); + if (!pager) + pager = getenv("PAGER"); + + /* If the pager is explicitly turned off, honour it */ + if (pager && (pager[0] == 0 || streq(pager, "cat"))) + return 0; + /* Determine and cache number of columns before we spawn the * pager so that we get the value from the actual tty */ - columns(); + (void) columns(); if (pipe(fd) < 0) return log_error_errno(errno, "Failed to create pager pipe: %m"); @@ -73,11 +76,8 @@ int pager_open(bool jump_to_end) { parent_pid = getpid(); pager_pid = fork(); - if (pager_pid < 0) { - r = log_error_errno(errno, "Failed to fork pager: %m"); - safe_close_pair(fd); - return r; - } + if (pager_pid < 0) + return log_error_errno(errno, "Failed to fork pager: %m"); /* In the child start the pager */ if (pager_pid == 0) { @@ -86,7 +86,7 @@ int pager_open(bool jump_to_end) { (void) reset_all_signal_handlers(); (void) reset_signal_mask(); - dup2(fd[0], STDIN_FILENO); + (void) dup2(fd[0], STDIN_FILENO); safe_close_pair(fd); /* Initialize a good set of less options */ @@ -141,7 +141,6 @@ int pager_open(bool jump_to_end) { if (dup2(fd[1], STDERR_FILENO) < 0) return log_error_errno(errno, "Failed to duplicate pager pipe: %m"); - safe_close_pair(fd); return 1; } |