Add efi_delenv
Add an interface to remove / delete UEFI variables.
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=346346
@ -122,6 +122,7 @@ void cpy16to8(const CHAR16 *, char *, size_t);
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* the loader setting / getting FreeBSD specific variables.
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*/
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EFI_STATUS efi_delenv(EFI_GUID *guid, const char *varname);
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EFI_STATUS efi_freebsd_getenv(const char *v, void *data, __size_t *len);
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EFI_STATUS efi_getenv(EFI_GUID *g, const char *v, void *data, __size_t *len);
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EFI_STATUS efi_global_getenv(const char *v, void *data, __size_t *len);
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@ -103,3 +103,21 @@ efi_setenv_freebsd_wcs(const char *varname, CHAR16 *valstr)
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return (rv);
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}
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/*
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* efi_delenv -- deletes the specified env variable
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*/
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EFI_STATUS
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efi_delenv(EFI_GUID *guid, const char *name)
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{
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CHAR16 *var;
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size_t len;
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EFI_STATUS rv;
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var = NULL;
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if (utf8_to_ucs2(name, &var, &len) != 0)
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return (EFI_OUT_OF_RESOURCES);
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rv = RS->SetVariable(var, guid, 0, 0, NULL);
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free(var);
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return rv;
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}
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