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git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/blob - lib/argv_split.c
2 * Helper function for splitting a string into an argv-like array.
5 #include <linux/kernel.h>
6 #include <linux/ctype.h>
7 #include <linux/slab.h>
8 #include <linux/module.h>
10 static const char *skip_sep(const char *cp
)
12 while (*cp
&& isspace(*cp
))
18 static const char *skip_arg(const char *cp
)
20 while (*cp
&& !isspace(*cp
))
26 static int count_argc(const char *str
)
42 * argv_free - free an argv
43 * @argv - the argument vector to be freed
45 * Frees an argv and the strings it points to.
47 void argv_free(char **argv
)
50 for (p
= argv
; *p
; p
++)
55 EXPORT_SYMBOL(argv_free
);
58 * argv_split - split a string at whitespace, returning an argv
59 * @gfp: the GFP mask used to allocate memory
60 * @str: the string to be split
61 * @argcp: returned argument count
63 * Returns an array of pointers to strings which are split out from
64 * @str. This is performed by strictly splitting on white-space; no
65 * quote processing is performed. Multiple whitespace characters are
66 * considered to be a single argument separator. The returned array
67 * is always NULL-terminated. Returns NULL on memory allocation
70 char **argv_split(gfp_t gfp
, const char *str
, int *argcp
)
72 int argc
= count_argc(str
);
73 char **argv
= kzalloc(sizeof(*argv
) * (argc
+1), gfp
);
93 t
= kstrndup(p
, str
-p
, gfp
);
108 EXPORT_SYMBOL(argv_split
);