49 lines
862 B
C
49 lines
862 B
C
#include "cache.h"
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int has_symlink_leading_path(const char *name, char *last_symlink)
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{
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char path[PATH_MAX];
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const char *sp, *ep;
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char *dp;
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sp = name;
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dp = path;
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if (last_symlink && *last_symlink) {
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size_t last_len = strlen(last_symlink);
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size_t len = strlen(name);
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if (last_len < len &&
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!strncmp(name, last_symlink, last_len) &&
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name[last_len] == '/')
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return 1;
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*last_symlink = '\0';
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}
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while (1) {
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size_t len;
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struct stat st;
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ep = strchr(sp, '/');
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if (!ep)
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break;
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len = ep - sp;
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if (PATH_MAX <= dp + len - path + 2)
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return 0; /* new name is longer than that??? */
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memcpy(dp, sp, len);
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dp[len] = 0;
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if (lstat(path, &st))
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return 0;
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if (S_ISLNK(st.st_mode)) {
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if (last_symlink)
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strcpy(last_symlink, path);
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return 1;
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}
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dp[len++] = '/';
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dp = dp + len;
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sp = ep + 1;
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}
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return 0;
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}
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