util: introduce waitpid_loop()

[elogind.git] / src / util.c

diff --git a/src/util.c b/src/util.c
index f1a7bbdc7124b1d977d536fcb4c83bea80213478..805d47afb43f505b156ea2af9c7e2950067d4536 100644 (file)
--- a/src/util.c
+++ b/src/util.c
@@ -49,6 +49,7 @@
 #include <netinet/ip.h>
 #include <linux/kd.h>
 #include <dlfcn.h>
+#include <sys/wait.h>
 
 #include "macro.h"
 #include "util.h"
@@ -1659,6 +1660,63 @@ char *format_timestamp(char *buf, size_t l, usec_t t) {
         return buf;
 }
 
+char *format_timestamp_pretty(char *buf, size_t l, usec_t t) {
+        usec_t n, d;
+
+        n = now(CLOCK_REALTIME);
+
+        if (t <= 0 || t > n || t + USEC_PER_DAY*7 <= t)
+                return NULL;
+
+        d = n - t;
+
+        if (d >= USEC_PER_YEAR)
+                snprintf(buf, l, "%llu years and %llu months ago",
+                         (unsigned long long) (d / USEC_PER_YEAR),
+                         (unsigned long long) ((d % USEC_PER_YEAR) / USEC_PER_MONTH));
+        else if (d >= USEC_PER_MONTH)
+                snprintf(buf, l, "%llu months and %llu days ago",
+                         (unsigned long long) (d / USEC_PER_MONTH),
+                         (unsigned long long) ((d % USEC_PER_MONTH) / USEC_PER_DAY));
+        else if (d >= USEC_PER_WEEK)
+                snprintf(buf, l, "%llu weeks and %llu days ago",
+                         (unsigned long long) (d / USEC_PER_WEEK),
+                         (unsigned long long) ((d % USEC_PER_WEEK) / USEC_PER_DAY));
+        else if (d >= 2*USEC_PER_DAY)
+                snprintf(buf, l, "%llu days ago", (unsigned long long) (d / USEC_PER_DAY));
+        else if (d >= 25*USEC_PER_HOUR)
+                snprintf(buf, l, "1 day and %lluh ago",
+                         (unsigned long long) ((d - USEC_PER_DAY) / USEC_PER_HOUR));
+        else if (d >= 6*USEC_PER_HOUR)
+                snprintf(buf, l, "%lluh ago",
+                         (unsigned long long) (d / USEC_PER_HOUR));
+        else if (d >= USEC_PER_HOUR)
+                snprintf(buf, l, "%lluh %llumin ago",
+                         (unsigned long long) (d / USEC_PER_HOUR),
+                         (unsigned long long) ((d % USEC_PER_HOUR) / USEC_PER_MINUTE));
+        else if (d >= 5*USEC_PER_MINUTE)
+                snprintf(buf, l, "%llumin ago",
+                         (unsigned long long) (d / USEC_PER_MINUTE));
+        else if (d >= USEC_PER_MINUTE)
+                snprintf(buf, l, "%llumin %llus ago",
+                         (unsigned long long) (d / USEC_PER_MINUTE),
+                         (unsigned long long) ((d % USEC_PER_MINUTE) / USEC_PER_SEC));
+        else if (d >= USEC_PER_SEC)
+                snprintf(buf, l, "%llus ago",
+                         (unsigned long long) (d / USEC_PER_SEC));
+        else if (d >= USEC_PER_MSEC)
+                snprintf(buf, l, "%llums ago",
+                         (unsigned long long) (d / USEC_PER_MSEC));
+        else if (d > 0)
+                snprintf(buf, l, "%lluus ago",
+                         (unsigned long long) d);
+        else
+                snprintf(buf, l, "now");
+
+        buf[l-1] = 0;
+        return buf;
+}
+
 char *format_timespan(char *buf, size_t l, usec_t t) {
         static const struct {
                 const char *suffix;
@@ -1860,9 +1918,9 @@ int reset_terminal(int fd) {
 
         assert(fd >= 0);
 
-        /* First, unlock termios */
-        zero(termios);
-        ioctl(fd, TIOCSLCKTRMIOS, &termios);
+        /* We leave locked terminal attributes untouched, so that
+         * Plymouth may set whatever it wants to set, and we don't
+         * interfere with that. */
 
         /* Disable exclusive mode, just in case */
         ioctl(fd, TIOCNXCL);
@@ -2778,6 +2836,32 @@ void status_welcome(void) {
 
         status_printf("Welcome to \x1B[0;32m%s\x1B[0m!\n", r); /* Green for SUSE */
         free(r);
+
+#elif defined(TARGET_GENTOO)
+        char *r;
+
+        if (read_one_line_file("/etc/gentoo-release", &r) < 0)
+                return;
+
+        truncate_nl(r);
+
+        status_printf("Welcome to \x1B[1;34m%s\x1B[0m!\n", r); /* Light Blue for Gentoo */
+
+        free(r);
+
+#elif defined(TARGET_DEBIAN)
+        char *r;
+
+        if (read_one_line_file("/etc/debian_version", &r) < 0)
+                return;
+
+        truncate_nl(r);
+
+        status_printf("Welcome to Debian \x1B[1;31m%s\x1B[0m!\n", r); /* Light Red for Debian */
+
+        free(r);
+#elif defined(TARGET_ARCH)
+        status_printf("Welcome to \x1B[1;36mArch Linux\x1B[0m!\n"); /* Cyan for Arch */
 #else
 #warning "You probably should add a welcome text logic here."
 #endif
@@ -2931,7 +3015,7 @@ int columns(void) {
                 struct winsize ws;
                 zero(ws);
 
-                if (ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) >= 0)
+                if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) >= 0)
                         parsed_columns = ws.ws_col;
         }
 
@@ -3017,6 +3101,23 @@ char *unquote(const char *s, const char quote) {
         return strdup(s);
 }
 
+int waitpid_loop(pid_t pid, int *status) {
+        assert(pid >= 1);
+        assert(status);
+
+        for (;;) {
+                if (waitpid(pid, status, 0) < 0) {
+
+                        if (errno == EINTR)
+                                continue;
+
+                        return -errno;
+                }
+
+                return 0;
+        }
+}
+
 static const char *const ioprio_class_table[] = {
         [IOPRIO_CLASS_NONE] = "none",
         [IOPRIO_CLASS_RT] = "realtime",
@@ -3131,7 +3232,9 @@ static const char *const signal_table[] = {
         [SIGPIPE] = "PIPE",
         [SIGALRM] = "ALRM",
         [SIGTERM] = "TERM",
-        [SIGSTKFLT] = "STKFLT",
+#ifdef SIGSTKFLT
+        [SIGSTKFLT] = "STKFLT",  /* Linux on SPARC doesn't know SIGSTKFLT */
+#endif
         [SIGCHLD] = "CHLD",
         [SIGCONT] = "CONT",
         [SIGSTOP] = "STOP",