mirror of
https://github.com/fluencelabs/musl
synced 2025-06-02 01:21:34 +00:00
35 lines
667 B
C
35 lines
667 B
C
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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extern char **__environ;
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int execvp(const char *file, char *const argv[])
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{
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const char *p, *z, *path = getenv("PATH");
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int l;
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if (strchr(file, '/'))
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return execve(file, argv, __environ);
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/* FIXME: integer overflows */
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if (!path) path = "/usr/local/bin:/bin:/usr/bin";
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l = strlen(file) + strlen(path) + 2;
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for(p=path; p && *p; p=z) {
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char b[l];
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z = strchr(p, ':');
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if (z) {
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memcpy(b, p, z-p);
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b[z++-p] = 0;
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} else strcpy(b, p);
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strcat(b, "/");
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strcat(b, file);
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if (!access(b, X_OK))
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return execve(b, argv, __environ);
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}
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errno = ENOENT;
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return -1;
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}
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