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utils: reimplement/fix mkdir_p() (v2)

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Reimplement mkdir_p() such that it:
 ...handles relativ paths correctly. (currently it crashes)
 ...does not rely on dirname().
 ...is not recursive.
 ...is shorter. ;-)

Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>
This commit is contained in:
Richard Weinberger 2013-04-17 23:54:09 +02:00 committed by Stéphane Graber
parent 23154d5764
commit 860fc865b0
1 changed files with 14 additions and 30 deletions
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44
src/lxc/utils.c
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@ -95,39 +95,23 @@ extern int get_u16(unsigned short *val, const char *arg, int base)
return 0;
}
static int is_all_slashes(char *path)
{
while (*path && *path == '/')
path++;
if (*path)
return 0;
return 1;
}
extern int mkdir_p(char *dir, mode_t mode)
{
int ret;
char *d;
char *tmp = dir;
char *orig = dir;
char *makeme;
if (is_all_slashes(dir))
return 0;
d = strdup(dir);
if (!d)
return -1;
ret = mkdir_p(dirname(d), mode);
free(d);
if (ret)
return -1;
if (!access(dir, F_OK))
return 0;
if (mkdir(dir, mode)) {
SYSERROR("failed to create directory '%s'\n", dir);
return -1;
}
do {
dir = tmp + strspn(tmp, "/");
tmp = dir + strcspn(dir, "/");
makeme = strndupa(orig, dir - orig);
if (*makeme) {
if (mkdir(makeme, mode) && errno != EEXIST) {
SYSERROR("failed to create directory '%s'\n", makeme);
return -1;
}
}
} while(tmp != dir);
return 0;
}