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   Pleroma-tan (kirby@lab.nyanide.com)'s status on Friday, 24-Nov-2023 22:00:38 JST Pleroma-tan
   really confused as to why this isnt working though, i just get a glibc memory corruption error
   
   the copy code worked fine before..? i just put it into a function so i don't have to keep doing it constantly in other programs
   • Embed this notice
     Pleroma-tan (kirby@lab.nyanide.com)'s status on Friday, 24-Nov-2023 22:02:06 JST Pleroma-tan

     in reply to
     fuck, i might have to use memset for the null terminator
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     paula (paula@comp.lain.la)'s status on Friday, 24-Nov-2023 22:05:12 JST paula

     in reply to
     @kirby if that were the problem i'd be shocked
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     Pleroma-tan (kirby@lab.nyanide.com)'s status on Friday, 24-Nov-2023 22:05:30 JST Pleroma-tan

     in reply to

     • paula
     @paula so it's probably not then, i wonder why this function is fucking up
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     Pleroma-tan (kirby@lab.nyanide.com)'s status on Friday, 24-Nov-2023 22:05:44 JST Pleroma-tan

     in reply to

     • paula
     @paula [the file contents function]
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     ロミンちゃん (romin@shitposter.club)'s status on Friday, 24-Nov-2023 22:05:54 JST ロミンちゃん

     in reply to
     @kirby
     >fuck, i might have to use memset for the null terminator
     No that's good, your problem is, with ftell, you aren't checking if it's returning -1 (which most definitely is doing it, as the stream given by popen isn't seekable or rewindable)
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     Pleroma-tan (kirby@lab.nyanide.com)'s status on Friday, 24-Nov-2023 22:06:17 JST Pleroma-tan

     in reply to

     • ロミンちゃん
     @romin oh shit
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     Pleroma-tan (kirby@lab.nyanide.com)'s status on Friday, 24-Nov-2023 22:08:12 JST Pleroma-tan

     in reply to

     • ロミンちゃん
     @romin thank you, now i need to figure out how to read the stupid bullshit from popen properly
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     paula (paula@comp.lain.la)'s status on Friday, 24-Nov-2023 22:08:19 JST paula

     in reply to
     @kirby so clue, i took a look at it and doesn't seem to be any obvious errors
     tho i'm still in bed and super eepy
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     ロミンちゃん (romin@shitposter.club)'s status on Friday, 24-Nov-2023 22:09:33 JST ロミンちゃん

     in reply to
     @kirby you need to read on a loop, reallocating the buffer appropriately, until there's no more data left
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     Pleroma-tan (kirby@lab.nyanide.com)'s status on Friday, 24-Nov-2023 22:10:20 JST Pleroma-tan

     in reply to

     • ロミンちゃん
     @romin i love tediousness
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     Pleroma-tan (kirby@lab.nyanide.com)'s status on Friday, 24-Nov-2023 22:11:11 JST Pleroma-tan

     in reply to

     • paula
     @paula it didnt work because i was using a stream from popen which doesnt let u seek
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     paula (paula@comp.lain.la)'s status on Friday, 24-Nov-2023 22:11:12 JST paula

     in reply to

     • paula
     @kirby yeah i really see no problem
     you're saying if you copy paste the function instead of calling it, then it works?
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     ロミンちゃん (romin@shitposter.club)'s status on Friday, 24-Nov-2023 22:11:58 JST ロミンちゃん

     in reply to
     @kirby well you're coding in SEE, you get what you deserve
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     Pleroma-tan (kirby@lab.nyanide.com)'s status on Friday, 24-Nov-2023 22:12:19 JST Pleroma-tan

     in reply to

     • ロミンちゃん
     @romin yes i do
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     翠星石 (suiseiseki@freesoftwareextremist.com)'s status on Friday, 24-Nov-2023 22:14:43 JST 翠星石

     in reply to
     @kirby I'm not exactly sure what you're trying to do there.
     
     If you want to open a file for reading and save it to a buffer for some reason, I would do;
     #include <sys/stat.h>
     
     FILE *fp = fopen("/home/chris/file", r);
     
     //get filesize, will be in stat.st_size
     struct stat stat;
     stat(fp, &stat);
     
     char *sneed = malloc(stat.st_size);
     
     fread(sneed, 1, stat.st_size), 1, fp);
     
     puts(sneed);
     
     free(sneed);
     fclose(fp);
     
     
     But that's a terribly broken program, I reckon I can achieve what you want to do much cleaner with like 10 lines.
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     翠星石 (suiseiseki@freesoftwareextremist.com)'s status on Friday, 24-Nov-2023 22:16:17 JST 翠星石

     in reply to
     @kirby The reason why the function is breaking is because you're telling it to open a folder as a file, or something else even more broken.
   • Embed this notice
     Pleroma-tan (kirby@lab.nyanide.com)'s status on Friday, 24-Nov-2023 22:16:26 JST Pleroma-tan

     in reply to

     • 翠星石
     @Suiseiseki it's a test program because i want to see how popen works for another project im contributing to
     
     this function works fine for most cases
   • Embed this notice
     Pleroma-tan (kirby@lab.nyanide.com)'s status on Friday, 24-Nov-2023 22:16:53 JST Pleroma-tan

     in reply to

     • 翠星石
     @Suiseiseki not this case though because popen is fucking <i>gay</i>
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     翠星石 (suiseiseki@freesoftwareextremist.com)'s status on Friday, 24-Nov-2023 22:24:15 JST 翠星石

     in reply to
     @kirby Dumping a file to stdout takes 5 lines;
     #include <stdio.h>
     #include <fcntl.h>
     #include <sys/stat.h>
     #include <unistd.h>
     #include <sys/sendfile.h>
     
     int main()
     {
     /* open file */
     int fp = open("main.c", O_RDONLY);
     
     /* get file stats */
     struct stat s;
     fstat(fp, &s);
     
     /* write file directly to stdout, with length from stat */
     sendfile(fileno(stdout), fp, NULL, s.st_size);
     
     close(fp);
     
     }
   • Embed this notice
     Pleroma-tan (kirby@lab.nyanide.com)'s status on Friday, 24-Nov-2023 22:25:43 JST Pleroma-tan

     in reply to

     • 翠星石
     @Suiseiseki i just need to copy the contents of a file into a buffer not write it to stdout
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     翠星石 (suiseiseki@freesoftwareextremist.com)'s status on Friday, 24-Nov-2023 22:46:00 JST 翠星石

     in reply to
     @kirby Okay, here you go;
     
     #include <stdio.h>
     #include <fcntl.h>
     #include <sys/stat.h>
     #include <unistd.h>
     
     int main()
     {
     /* open file */
     int fp = open("main.c", O_RDONLY);
     
     /* get file stats */
     struct stat s;
     fstat(fp, &s);
     
     char buffer[s.st_size];
     ssize_t ignored = read(fp, buffer, s.st_size);
     close(fp);
     
     ignored = write(STDOUT_FILENO, buffer, sizeof(buffer));
     
     }
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     ロミンちゃん (romin@shitposter.club)'s status on Friday, 24-Nov-2023 22:51:16 JST ロミンちゃん

     in reply to

     • 翠星石

     @kirby @Suiseiseki execl("/bin/cp", "cp", "file1", "file2", (char *) NULL); :l_hehe;

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     翠星石 (suiseiseki@freesoftwareextremist.com)'s status on Friday, 24-Nov-2023 22:59:37 JST 翠星石

     in reply to

     • ロミンちゃん
     @romin Ah yes, based GNU cp enjoyer.
     
     Hmm, the rename(2) function is easy to get documentation on, but I wonder where's the copy(2) function?
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     Fifo™ (fifo@mastodon.fifo-f.eu)'s status on Saturday, 25-Nov-2023 09:57:06 JST Fifo™

     in reply to

     @kirby nice hostname lol