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efi_loader: allow device == NULL in efi_dp_from_name()

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This is a preparatory patch for use in efi_serialize_load_option()
as a load option's file_path should have both a device path and
a file path.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
AKASHI Takahiro 2018-11-05 18:06:40 +09:00 • committed by Alexander Graf
parent b989648cf4
commit 2419b161cc
1 changed files with 7 additions and 4 deletions
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11
lib/efi_loader/efi_device_path.c
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@ -955,7 +955,7 @@ efi_status_t efi_dp_from_name(const char *dev, const char *devnr,
char filename[32] = { 0 }; /* dp->str is u16[32] long */ char filename[32] = { 0 }; /* dp->str is u16[32] long */
char *s; char *s;
if (!device || (path && !file)) if (path && !file)
return EFI_INVALID_PARAMETER; return EFI_INVALID_PARAMETER;
is_net = !strcmp(dev, "Net"); is_net = !strcmp(dev, "Net");
@ -965,10 +965,12 @@ efi_status_t efi_dp_from_name(const char *dev, const char *devnr,
if (part < 0) if (part < 0)
return EFI_INVALID_PARAMETER; return EFI_INVALID_PARAMETER;
*device = efi_dp_from_part(desc, part); if (device)
*device = efi_dp_from_part(desc, part);
} else { } else {
#ifdef CONFIG_NET #ifdef CONFIG_NET
*device = efi_dp_from_eth(); if (device)
*device = efi_dp_from_eth();
#endif #endif
} }
@ -985,7 +987,8 @@ efi_status_t efi_dp_from_name(const char *dev, const char *devnr,
s = filename; s = filename;
while ((s = strchr(s, '/'))) while ((s = strchr(s, '/')))
*s++ = '\\'; *s++ = '\\';
*file = efi_dp_from_file(NULL, 0, filename); *file = efi_dp_from_file(((!is_net && device) ? desc : NULL),
part, filename);
return EFI_SUCCESS; return EFI_SUCCESS;
} }