check_file

Name:Check if we support the binfmt* if we do, return the node, else NULL* locking is done in load_misc_binary

Proto:static Node *check_file(struct linux_binprm *bprm)

Type:Node

Parameter:

Type	Parameter	Name
struct linux_binprm *	bprm

92

p = strrchr - Find the last occurrence of a character in a string*@s: The string to be searched*@c: The character to search for

97

e = list_entry - get the struct for this entry*@ptr: the &struct list_head pointer.*@type: the type of the struct this is embedded in.*@member: the name of the list_head within the struct.(l, Node, list)

102

If Not st_bit - Determine whether a bit is set*@nr: bit number to test*@addr: Address to start counting from Then Continue

106

If Not st_bit - Determine whether a bit is set*@nr: bit number to test*@addr: Address to start counting from Then

107

If p && Not strcmp( magic or filename extension , p + 1) Then Return e

109

Continue

113

s = buf + offset of magic

114

If mask, NULL for exact match Then

115

When j < size of magic/mask cycle If ( s++ ^ magic or filename extension [j]) & mask, NULL for exact match [j] Then

117

Break

118

Else

119

When j < size of magic/mask cycle If s++ ^ magic or filename extension [j] Then

121

Break

123

If j == size of magic/mask Then Return e

126

Return NULL

**Caller**
Name	Describe
load_misc_binary	he loader itself

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