f1d48aec43
In principle this could work, but the current remount logic in nix fails to remount mountpoints that are root in their own filesystem (as would be the case with bind-mounting a mountpoint over itself). nixos/nix#98 is aimed at fixing this. Signed-off-by: Shea Levy <shea@shealevy.com>
21 lines
333 B
C
21 lines
333 B
C
#include <sys/statvfs.h>
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#include <stdio.h>
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#include <stdlib.h>
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int main(int argc, char ** argv) {
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struct statvfs stat;
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if (argc != 2) {
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fprintf(stderr, "Usage: %s PATH", argv[0]);
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exit(2);
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}
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if (statvfs(argv[1], &stat) != 0) {
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perror("statvfs");
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exit(3);
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}
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if (stat.f_flag & ST_RDONLY)
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exit(0);
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else
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exit(1);
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}
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