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authorLinus Torvalds <torvalds@linux-foundation.org>2020-02-11 16:39:18 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2020-02-11 16:39:18 -0800
commit61a75954034f951a77d58b1cfb9186c62e6abcf8 (patch)
tree4cef540d1c86bbc673a6246d6733c56d950b414b /init
parent0a679e13ea30f85a1aef0669ee0c5a9fd7860b34 (diff)
parent7276531d4036f5db2af15c8b6caa02e7741f5d80 (diff)
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Merge tag 'trace-v5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt: "Various fixes: - Fix an uninitialized variable - Fix compile bug to bootconfig userspace tool (in tools directory) - Suppress some error messages of bootconfig userspace tool - Remove unneded CONFIG_LIBXBC from bootconfig - Allocate bootconfig xbc_nodes dynamically. To ease complaints about taking up static memory at boot up - Use of parse_args() to parse bootconfig instead of strstr() usage Prevents issues of double quotes containing the interested string - Fix missing ring_buffer_nest_end() on synthetic event error path - Return zero not -EINVAL on soft disabled synthetic event (soft disabling must be the same as hard disabling, which returns zero) - Consolidate synthetic event code (remove duplicate code)" * tag 'trace-v5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing: Consolidate trace() functions tracing: Don't return -EINVAL when tracing soft disabled synth events tracing: Add missing nest end to synth_event_trace_start() error case tools/bootconfig: Suppress non-error messages bootconfig: Allocate xbc_nodes array dynamically bootconfig: Use parse_args() to find bootconfig and '--' tracing/kprobe: Fix uninitialized variable bug bootconfig: Remove unneeded CONFIG_LIBXBC tools/bootconfig: Fix wrong __VA_ARGS__ usage
Diffstat (limited to 'init')
-rw-r--r--init/Kconfig1
-rw-r--r--init/main.c37
2 files changed, 30 insertions, 8 deletions
diff --git a/init/Kconfig b/init/Kconfig
index cfee56c151f1..452bc1835cd4 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1227,7 +1227,6 @@ endif
config BOOT_CONFIG
bool "Boot config support"
depends on BLK_DEV_INITRD
- select LIBXBC
default y
help
Extra boot config allows system admin to pass a config file as
diff --git a/init/main.c b/init/main.c
index cc0ee4873419..f95b014a5479 100644
--- a/init/main.c
+++ b/init/main.c
@@ -142,6 +142,15 @@ static char *extra_command_line;
/* Extra init arguments */
static char *extra_init_args;
+#ifdef CONFIG_BOOT_CONFIG
+/* Is bootconfig on command line? */
+static bool bootconfig_found;
+static bool initargs_found;
+#else
+# define bootconfig_found false
+# define initargs_found false
+#endif
+
static char *execute_command;
static char *ramdisk_execute_command;
@@ -336,17 +345,30 @@ u32 boot_config_checksum(unsigned char *p, u32 size)
return ret;
}
+static int __init bootconfig_params(char *param, char *val,
+ const char *unused, void *arg)
+{
+ if (strcmp(param, "bootconfig") == 0) {
+ bootconfig_found = true;
+ } else if (strcmp(param, "--") == 0) {
+ initargs_found = true;
+ }
+ return 0;
+}
+
static void __init setup_boot_config(const char *cmdline)
{
+ static char tmp_cmdline[COMMAND_LINE_SIZE] __initdata;
u32 size, csum;
char *data, *copy;
- const char *p;
u32 *hdr;
int ret;
- p = strstr(cmdline, "bootconfig");
- if (!p || (p != cmdline && !isspace(*(p-1))) ||
- (p[10] && !isspace(p[10])))
+ strlcpy(tmp_cmdline, boot_command_line, COMMAND_LINE_SIZE);
+ parse_args("bootconfig", tmp_cmdline, NULL, 0, 0, 0, NULL,
+ bootconfig_params);
+
+ if (!bootconfig_found)
return;
if (!initrd_end)
@@ -562,11 +584,12 @@ static void __init setup_command_line(char *command_line)
* to init.
*/
len = strlen(saved_command_line);
- if (!strstr(boot_command_line, " -- ")) {
+ if (initargs_found) {
+ saved_command_line[len++] = ' ';
+ } else {
strcpy(saved_command_line + len, " -- ");
len += 4;
- } else
- saved_command_line[len++] = ' ';
+ }
strcpy(saved_command_line + len, extra_init_args);
}