tls: in AES-GCM decoding, avoid memmove

[oweals/busybox.git] / util-linux / chrt.c

diff --git a/util-linux/chrt.c b/util-linux/chrt.c
index e7abd4f5a91fff155a3eb548851004e6bb77d0db..45459d940b140b8d50ba9088cd5d5453c6176849 100644 (file)
--- a/util-linux/chrt.c
+++ b/util-linux/chrt.c
@@ -9,7 +9,7 @@
 //config:      bool "chrt (4.4 kb)"
 //config:      default y
 //config:      help
-//config:      manipulate real-time attributes of a process.
+//config:      Manipulate real-time attributes of a process.
 //config:      This requires sched_{g,s}etparam support in your libc.
 
 //applet:IF_CHRT(APPLET_NOEXEC(chrt, chrt, BB_DIR_USR_BIN, BB_SUID_DROP, chrt))
@@ -17,7 +17,7 @@
 //kbuild:lib-$(CONFIG_CHRT) += chrt.o
 
 //usage:#define chrt_trivial_usage
-//usage:       "[-prfomb] [PRIO] [PID | PROG ARGS]"
+//usage:       "[-prfombi] [PRIO] [PID | PROG ARGS]"
 //usage:#define chrt_full_usage "\n\n"
 //usage:       "Change scheduling priority and class for a process\n"
 //usage:     "\n       -p      Operate on PID"
@@ -25,6 +25,7 @@
 //usage:     "\n       -f      Set SCHED_FIFO class"
 //usage:     "\n       -o      Set SCHED_OTHER class"
 //usage:     "\n       -b      Set SCHED_BATCH class"
+//usage:     "\n       -i      Set SCHED_IDLE class"
 //usage:     "\n       -m      Show min/max priorities"
 //usage:
 //usage:#define chrt_example_usage
@@ -34,20 +35,22 @@
 
 #include <sched.h>
 #include "libbb.h"
+#ifndef SCHED_IDLE
+# define SCHED_IDLE 5
+#endif
 
 static const struct {
-       int policy;
        char name[sizeof("SCHED_OTHER")];
 } policies[] = {
-       {SCHED_OTHER, "SCHED_OTHER"},
-       {SCHED_FIFO, "SCHED_FIFO"},
-       {SCHED_RR, "SCHED_RR"},
-       {SCHED_BATCH, "SCHED_BATCH"}
+       { "SCHED_OTHER" }, /* 0:SCHED_OTHER */
+       { "SCHED_FIFO" },  /* 1:SCHED_FIFO */
+       { "SCHED_RR" },    /* 2:SCHED_RR */
+       { "SCHED_BATCH" }, /* 3:SCHED_BATCH */
+       { "" },            /* 4:SCHED_ISO */
+       { "SCHED_IDLE" },  /* 5:SCHED_IDLE */
+       /* 6:SCHED_DEADLINE */
 };
 
-//TODO: add
-// -i, SCHED_IDLE
-
 static void show_min_max(int pol)
 {
        const char *fmt = "%s min/max priority\t: %u/%u\n";
@@ -66,6 +69,7 @@ static void show_min_max(int pol)
 #define OPT_f (1<<3)
 #define OPT_o (1<<4)
 #define OPT_b (1<<5)
+#define OPT_i (1<<6)
 
 int chrt_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int chrt_main(int argc UNUSED_PARAM, char **argv)
@@ -78,23 +82,30 @@ int chrt_main(int argc UNUSED_PARAM, char **argv)
        const char *current_new;
        int policy = SCHED_RR;
 
-       /* only one policy accepted */
-       opt = getopt32(argv, "^+" "mprfob" "\0" "r--fob:f--rob:o--rfb:b--rfo");
+       opt = getopt32(argv, "^"
+                       "+" "mprfobi"
+                       "\0"
+                       /* only one policy accepted: */
+                       "r--fobi:f--robi:o--rfbi:b--rfoi:i--rfob"
+       );
        if (opt & OPT_m) { /* print min/max and exit */
+               show_min_max(SCHED_OTHER);
                show_min_max(SCHED_FIFO);
                show_min_max(SCHED_RR);
-               show_min_max(SCHED_OTHER);
                show_min_max(SCHED_BATCH);
+               show_min_max(SCHED_IDLE);
                fflush_stdout_and_exit(EXIT_SUCCESS);
        }
-       if (opt & OPT_r)
-               policy = SCHED_RR;
+       //if (opt & OPT_r)
+       //      policy = SCHED_RR; - default, already set
        if (opt & OPT_f)
                policy = SCHED_FIFO;
        if (opt & OPT_o)
                policy = SCHED_OTHER;
        if (opt & OPT_b)
                policy = SCHED_BATCH;
+       if (opt & OPT_i)
+               policy = SCHED_IDLE;
 
        argv += optind;
        if (!argv[0])
@@ -136,13 +147,9 @@ int chrt_main(int argc UNUSED_PARAM, char **argv)
                current_new += 8;
        }
 
-       /* from the manpage of sched_getscheduler:
-       [...] sched_priority can have a value in the range 0 to 99.
-       [...] SCHED_OTHER or SCHED_BATCH must be assigned static priority 0.
-       [...] SCHED_FIFO or SCHED_RR can have static priority in 1..99 range.
-       */
        sp.sched_priority = xstrtou_range(priority, 0,
-                       (policy != SCHED_OTHER && policy != SCHED_BATCH) ? 1 : 0, 99);
+               sched_get_priority_min(policy), sched_get_priority_max(policy)
+       );
 
        if (sched_setscheduler(pid, policy, &sp) < 0)
                bb_perror_msg_and_die("can't %cet pid %d's policy", 's', (int)pid);