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vsprintf: add %pOF

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This prints a full ofnode path.

Signed-off-by: Casey Connolly <casey.connolly@linaro.org>
This commit is contained in:
Casey Connolly
2026-04-01 16:15:17 +02:00
committed by Tom Rini
parent c704af3c8b
commit 968164b686
1 changed files with 37 additions and 0 deletions
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37
lib/vsprintf.c
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@@ -26,6 +26,11 @@
#include <linux/types.h>
#include <linux/string.h>
/* For %pOF */
#if CONFIG_IS_ENABLED(OF_CONTROL)
#include <dm/ofnode.h>
#endif
/* we use this so that we can do without the ctype library */
#define is_digit(c) ((c) >= '0' && (c) <= '9')
@@ -438,6 +443,30 @@ static char *uuid_string(char *buf, char *end, u8 *addr, int field_width,
}
#endif
#if CONFIG_IS_ENABLED(OF_CONTROL) && !defined(API_BUILD)
static char *ofnode_string(char *buf, char *end, ofnode *dp, int field_width,
int precision, int flags)
{
#define NP_PATH_MAX 64
char str[NP_PATH_MAX] = { 0 };
const char *err = "...";
/* If dp == NULL output the string '<NULL>' */
if (!dp || !ofnode_valid(*dp))
return string(buf, end, NULL, field_width, precision, flags);
/* Get the path and indicate if it got cut off */
if (ofnode_get_path(*dp, str, NP_PATH_MAX)) {
str[NP_PATH_MAX - 1] = '\0';
char *p = str + min((NP_PATH_MAX - 2) - strlen(err), strlen(str));
memcpy(p, err, strlen(err) + 1);
}
return string(buf, end, str, field_width, precision, flags);
#undef NP_PATH_MAX
}
#endif
/*
* Show a '%p' thing. A kernel extension is that the '%p' is followed
* by an extra set of alphanumeric characters that are extended format
@@ -473,6 +502,14 @@ static char *pointer(const char *fmt, char *buf, char *end, void *ptr,
case 'D':
return device_path_string(buf, end, ptr, field_width,
precision, flags);
#endif
/* Device paths only exist in the EFI context. */
#if CONFIG_IS_ENABLED(OF_CONTROL) && !defined(API_BUILD)
case 'O':
if (fmt[1] == 'F')
return ofnode_string(buf, end, ptr, field_width,
precision, flags);
break;
#endif
case 'a':
flags |= SPECIAL | ZEROPAD;