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Index: usr.bin/uname/uname.1
===================================================================
--- usr.bin/uname/uname.1
+++ usr.bin/uname/uname.1
@@ -28,7 +28,7 @@
.\" @(#)uname.1 8.3 (Berkeley) 4/8/94
.\" $FreeBSD$
.\"
-.Dd May 31, 2017
+.Dd June 4, 2019
.Dt UNAME 1
.Os
.Sh NAME
@@ -53,6 +53,8 @@
and
.Fl v
were specified.
+.It Fl b
+Write the kernel's linker-generated build-id to standard output.
.It Fl i
Write the kernel ident to standard output.
.It Fl K
@@ -152,3 +154,7 @@
.Fl U
extension flags appeared in
.Fx 10.0 .
+The
+.Fl b
+extension flag appeared in
+.Fx 13.0 .
Index: usr.bin/uname/uname.c
===================================================================
--- usr.bin/uname/uname.c
+++ usr.bin/uname/uname.c
@@ -67,9 +67,10 @@
#define IFLAG 0x40
#define UFLAG 0x80
#define KFLAG 0x100
+#define BFLAG 0x200
typedef void (*get_t)(void);
-static get_t get_ident, get_platform, get_hostname, get_arch,
+static get_t get_buildid, get_ident, get_platform, get_hostname, get_arch,
get_release, get_sysname, get_kernvers, get_uservers, get_version;
static void native_ident(void);
@@ -81,11 +82,13 @@
static void native_version(void);
static void native_kernvers(void);
static void native_uservers(void);
+static void native_buildid(void);
static void print_uname(u_int);
static void setup_get(void);
static void usage(void);
-static char *ident, *platform, *hostname, *arch, *release, *sysname, *version, *kernvers, *uservers;
+static char *buildid, *ident, *platform, *hostname, *arch, *release, *sysname,
+ *version, *kernvers, *uservers;
static int space;
int
@@ -97,11 +100,14 @@
setup_get();
flags = 0;
- while ((ch = getopt(argc, argv, "aiKmnoprsUv")) != -1)
+ while ((ch = getopt(argc, argv, "abiKmnoprsUv")) != -1)
switch(ch) {
case 'a':
flags |= (MFLAG | NFLAG | RFLAG | SFLAG | VFLAG);
break;
+ case 'b':
+ flags |= BFLAG;
+ break;
case 'i':
flags |= IFLAG;
break;
@@ -169,6 +175,7 @@
CHECK_ENV("i", ident);
CHECK_ENV("K", kernvers);
CHECK_ENV("U", uservers);
+ CHECK_ENV("b", buildid);
}
#define PRINT_FLAG(flags,flag,var) \
@@ -194,6 +201,7 @@
PRINT_FLAG(flags, IFLAG, ident);
PRINT_FLAG(flags, KFLAG, kernvers);
PRINT_FLAG(flags, UFLAG, uservers);
+ PRINT_FLAG(flags, BFLAG, buildid);
printf("\n");
}
@@ -261,6 +269,9 @@
NATIVE_SYSCTLNAME_GET(ident, "kern.ident") {
} NATIVE_SET;
+NATIVE_SYSCTLNAME_GET(buildid, "kern.build_id") {
+} NATIVE_SET;
+
static void
native_uservers(void)
{
@@ -282,6 +293,6 @@
static void
usage(void)
{
- fprintf(stderr, "usage: uname [-aiKmnoprsUv]\n");
+ fprintf(stderr, "usage: uname [-abiKmnoprsUv]\n");
exit(1);
}

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