494eb683f3
Add the public interfaces getpidprevcon(3) and getpidprevcon_raw(3), and the utility getpidprevcon to gather the previous context before the last exec of a given process. Signed-off-by: Christian Göttsche <cgzones@googlemail.com> Acked-by: Jason Zaman <jason@perfinion.com>
33 lines
600 B
C
33 lines
600 B
C
#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <selinux/selinux.h>
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int main(int argc, char **argv)
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{
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pid_t pid;
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char *buf;
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int rc;
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if (argc != 2) {
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fprintf(stderr, "usage: %s pid\n", argv[0]);
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exit(1);
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}
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if (sscanf(argv[1], "%d", &pid) != 1) {
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fprintf(stderr, "%s: invalid pid %s\n", argv[0], argv[1]);
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exit(2);
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}
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rc = getpidprevcon(pid, &buf);
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if (rc < 0) {
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fprintf(stderr, "%s: getpidprevcon() failed: %s\n", argv[0], strerror(errno));
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exit(3);
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}
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printf("%s\n", buf);
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freecon(buf);
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exit(EXIT_SUCCESS);
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}
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