diff options
| author | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2020-06-17 12:20:46 +0200 |
|---|---|---|
| committer | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2020-07-11 23:14:17 +0200 |
| commit | 37fa7cb045cc15b3a22377fa2e3fb00b2d132d7a (patch) | |
| tree | 3725182299180a3416d08a5e62fbb14b0e505132 /lib/efi_loader | |
| parent | dda8c7163a2b4f3d30f54cd3553b2c81bc64e787 (diff) | |
efi_loader: keep attributes in efi_set_variable_int
Do not change the value of parameter attributes in function
efi_set_variable_int(). This allows to use it later.
Do not use variable attr for different purposes but declare separate
variables (attr and old_attr).
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Diffstat (limited to 'lib/efi_loader')
| -rw-r--r-- | lib/efi_loader/efi_variable.c | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/lib/efi_loader/efi_variable.c b/lib/efi_loader/efi_variable.c index 36bac86702..c9980ca692 100644 --- a/lib/efi_loader/efi_variable.c +++ b/lib/efi_loader/efi_variable.c @@ -827,7 +827,7 @@ efi_status_t efi_set_variable_int(u16 *variable_name, const efi_guid_t *vendor, efi_uintn_t old_size; bool append, delete; u64 time = 0; - u32 attr; + u32 old_attr; efi_status_t ret = EFI_SUCCESS; if (!variable_name || !*variable_name || !vendor || @@ -843,8 +843,8 @@ efi_status_t efi_set_variable_int(u16 *variable_name, const efi_guid_t *vendor, /* check if a variable exists */ old_size = 0; - attr = 0; - ret = efi_get_variable_int(variable_name, vendor, &attr, + old_attr = 0; + ret = efi_get_variable_int(variable_name, vendor, &old_attr, &old_size, NULL, &time); append = !!(attributes & EFI_VARIABLE_APPEND_WRITE); attributes &= ~(u32)EFI_VARIABLE_APPEND_WRITE; @@ -852,15 +852,15 @@ efi_status_t efi_set_variable_int(u16 *variable_name, const efi_guid_t *vendor, /* check attributes */ if (old_size) { - if (ro_check && (attr & EFI_VARIABLE_READ_ONLY)) { + if (ro_check && (old_attr & EFI_VARIABLE_READ_ONLY)) { ret = EFI_WRITE_PROTECTED; goto err; } /* attributes won't be changed */ if (!delete && - ((ro_check && attr != attributes) || - (!ro_check && ((attr & ~(u32)EFI_VARIABLE_READ_ONLY) + ((ro_check && old_attr != attributes) || + (!ro_check && ((old_attr & ~(u32)EFI_VARIABLE_READ_ONLY) != (attributes & ~(u32)EFI_VARIABLE_READ_ONLY))))) { ret = EFI_INVALID_PARAMETER; goto err; @@ -902,7 +902,7 @@ efi_status_t efi_set_variable_int(u16 *variable_name, const efi_guid_t *vendor, EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS) { ret = efi_variable_authenticate(variable_name, vendor, &data_size, &data, - attributes, &attr, + attributes, &old_attr, &time); if (ret != EFI_SUCCESS) goto err; @@ -936,7 +936,7 @@ efi_status_t efi_set_variable_int(u16 *variable_name, const efi_guid_t *vendor, goto err; } ret = efi_get_variable_int(variable_name, vendor, - &attr, &old_size, old_data, NULL); + &old_attr, &old_size, old_data, NULL); if (ret != EFI_SUCCESS) goto err; } else { @@ -962,8 +962,8 @@ efi_status_t efi_set_variable_int(u16 *variable_name, const efi_guid_t *vendor, EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS); s += sprintf(s, "{"); - while (attributes) { - attr = 1 << (ffs(attributes) - 1); + for (u32 attr_rem = attributes; attr_rem;) { + u32 attr = 1 << (ffs(attr_rem) - 1); if (attr == EFI_VARIABLE_READ_ONLY) { s += sprintf(s, "ro"); @@ -979,8 +979,8 @@ efi_status_t efi_set_variable_int(u16 *variable_name, const efi_guid_t *vendor, s = bin2hex(s, (u8 *)&time, sizeof(time)); } - attributes &= ~attr; - if (attributes) + attr_rem &= ~attr; + if (attr_rem) s += sprintf(s, ","); } s += sprintf(s, "}"); |