f02b64de8
Denys Vlasenko
2021-06-17
Subject
ionice: implement -t
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util-linux/ionice.c+10 -7
| @@ -18,12 +18,13 @@ | |
| //kbuild:lib-$(CONFIG_IONICE) += ionice.o | |
| //usage:#define ionice_trivial_usage | |
| - | //usage: "[-c 1-3] [-n 0-7] { -p PID | PROG ARGS }" |
| + | //usage: "[-c 1-3] [-n 0-7] [-t] { -p PID | PROG ARGS }" |
| //TODO: | -P PGID | -u UID; also -pPu can take _list of_ IDs | |
| //usage:#define ionice_full_usage "\n\n" | |
| //usage: "Change I/O priority and class\n" | |
| //usage: "\n -c N Class. 1:realtime 2:best-effort 3:idle" | |
| //usage: "\n -n N Priority" | |
| + | //usage: "\n -t Ignore errors" |
| #include <sys/syscall.h> | |
| #include <asm/unistd.h> | |
| @@ -65,14 +66,15 @@ int ionice_main(int argc UNUSED_PARAM, char **argv) | |
| int pid = 0; /* affect own process */ | |
| int opt; | |
| enum { | |
| - | OPT_n = 1, |
| - | OPT_c = 2, |
| - | OPT_p = 4, |
| + | OPT_n = 1 << 0, |
| + | OPT_c = 1 << 1, |
| + | OPT_p = 1 << 2, |
| + | OPT_t = 1 << 3, |
| }; | |
| - | /* Numeric params */ |
| /* '+': stop at first non-option */ | |
| - | opt = getopt32(argv, "+n:+c:+p:+", &pri, &ioclass, &pid); |
| + | /* numeric params for -n -c -p */ |
| + | opt = getopt32(argv, "+""n:+c:+p:+t", &pri, &ioclass, &pid); |
| argv += optind; | |
| if (opt & OPT_c) { | |
| @@ -105,7 +107,8 @@ int ionice_main(int argc UNUSED_PARAM, char **argv) | |
| //pri, ioclass, pri | (ioclass << IOPRIO_CLASS_SHIFT)); | |
| pri |= (ioclass << IOPRIO_CLASS_SHIFT); | |
| if (ioprio_set(IOPRIO_WHO_PROCESS, pid, pri) == -1) | |
| - | bb_perror_msg_and_die("ioprio_%cet", 's'); |
| + | if (!(opt & OPT_t)) |
| + | bb_perror_msg_and_die("ioprio_%cet", 's'); |
| if (argv[0]) { | |
| BB_EXECVP_or_die(argv); | |
| } | |