=====Gestion des erreurs=====
====errno====
===Liste===
Source [[https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/plain/include/uapi/asm-generic/errno-base.h|errno-base.h]] ({{ :lang:c:noyaulinux:errno-base.h |archive 23/09/2018}}), [[https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/plain/include/uapi/asm-generic/errno.h|errno.h]] ({{ :lang:c:noyaulinux:errno.h |archive 23/09/2018}})

^ Abbréviation ^ Code ^ Description ^
|''EEPERM''|1|Operation not permitted|
|''EENOENT''|2|No such file or directory|
|''EESRCH''|3|No such process|
|''EEINTR''|4|Interrupted system call|
|''EEIO''|5|I/O error|
|''EENXIO''|6|No such device or address|
|''EE2BIG''|7|Argument list too long|
|''EENOEXEC''|8|Exec format error|
|''EEBADF''|9|Bad file number|
|''EECHILD''|10|No child processes|
|''EEAGAIN''|11|Try again|
|''EEWOULDBLOCK''|11|Operation would block|
|''EENOMEM''|12|Out of memory|
|''EEACCES''|13|Permission denied|
|''EEFAULT''|14|Bad address|
|''EENOTBLK''|15|Block device required|
|''EEBUSY''|16|Device or resource busy|
|''EEEXIST''|17|File exists|
|''EEXDEV''|18|Cross-device link|
|''EENODEV''|19|No such device|
|''EENOTDIR''|20|Not a directory|
|''EEISDIR''|21|Is a directory|
|''EEINVAL''|22|Invalid argument|
|''EENFILE''|23|File table overflow|
|''EEMFILE''|24|Too many open files|
|''EENOTTY''|25|Not a typewriter|
|''EETXTBSY''|26|Text file busy|
|''EEFBIG''|27|File too large|
|''EENOSPC''|28|No space left on device|
|''EESPIPE''|29|Illegal seek|
|''EEROFS''|30|Read-only file system|
|''EEMLINK''|31|Too many links|
|''EEPIPE''|32|Broken pipe|
|''EEDOM''|33|Math argument out of domain of func|
|''EERANGE''|34|Math result not representable|
|''EEDEADLK''|35|Resource deadlock would occur|
|''EEDEADLOCK''|35|Resource deadlock would occur|
|''EENAMETOOLONG''|36|File name too long|
|''EENOLCK''|37|No record locks available|
|''EENOSYS''|38|Invalid system call number|
|''EENOTEMPTY''|39|Directory not empty|
|''EELOOP''|40|Too many symbolic links encountered|
|''EENOMSG''|42|No message of desired type|
|''EEIDRM''|43|Identifier removed|
|''EECHRNG''|44|Channel number out of range|
|''EEL2NSYNC''|45|Level 2 not synchronized|
|''EEL3HLT''|46|Level 3 halted|
|''EEL3RST''|47|Level 3 reset|
|''EELNRNG''|48|Link number out of range|
|''EEUNATCH''|49|Protocol driver not attached|
|''EENOCSI''|50|No CSI structure available|
|''EEL2HLT''|51|Level 2 halted|
|''EEBADE''|52|Invalid exchange|
|''EEBADR''|53|Invalid request descriptor|
|''EEXFULL''|54|Exchange full|
|''EENOANO''|55|No anode|
|''EEBADRQC''|56|Invalid request code|
|''EEBADSLT''|57|Invalid slot|
|''EEBFONT''|59|Bad font file format|
|''EENOSTR''|60|Device not a stream|
|''EENODATA''|61|No data available|
|''EETIME''|62|Timer expired|
|''EENOSR''|63|Out of streams resources|
|''EENONET''|64|Machine is not on the network|
|''EENOPKG''|65|Package not installed|
|''EEREMOTE''|66|Object is remote|
|''EENOLINK''|67|Link has been severed|
|''EEADV''|68|Advertise error|
|''EESRMNT''|69|Srmount error|
|''EECOMM''|70|Communication error on send|
|''EEPROTO''|71|Protocol error|
|''EEMULTIHOP''|72|Multihop attempted|
|''EEDOTDOT''|73|RFS specific error|
|''EEBADMSG''|74|Not a data message|
|''EEOVERFLOW''|75|Value too large for defined data type|
|''EENOTUNIQ''|76|Name not unique on network|
|''EEBADFD''|77|File descriptor in bad state|
|''EEREMCHG''|78|Remote address changed|
|''EELIBACC''|79|Can not access a needed shared library|
|''EELIBBAD''|80|Accessing a corrupted shared library|
|''EELIBSCN''|81|.lib section in a.out corrupted|
|''EELIBMAX''|82|Attempting to link in too many shared libraries|
|''EELIBEXEC''|83|Cannot exec a shared library directly|
|''EEILSEQ''|84|Illegal byte sequence|
|''EERESTART''|85|Interrupted system call should be restarted|
|''EESTRPIPE''|86|Streams pipe error|
|''EEUSERS''|87|Too many users|
|''EENOTSOCK''|88|Socket operation on non-socket|
|''EEDESTADDRREQ''|89|Destination address required|
|''EEMSGSIZE''|90|Message too long|
|''EEPROTOTYPE''|91|Protocol wrong type for socket|
|''EENOPROTOOPT''|92|Protocol not available|
|''EEPROTONOSUPPORT''|93|Protocol not supported|
|''EESOCKTNOSUPPORT''|94|Socket type not supported|
|''EEOPNOTSUPP''|95|Operation not supported on transport endpoint|
|''EEPFNOSUPPORT''|96|Protocol family not supported|
|''EEAFNOSUPPORT''|97|Address family not supported by protocol|
|''EEADDRINUSE''|98|Address already in use|
|''EEADDRNOTAVAIL''|99|Cannot assign requested address|
|''EENETDOWN''|100|Network is down|
|''EENETUNREACH''|101|Network is unreachable|
|''EENETRESET''|102|Network dropped connection because of reset|
|''EECONNABORTED''|103|Software caused connection abort|
|''EECONNRESET''|104|Connection reset by peer|
|''EENOBUFS''|105|No buffer space available|
|''EEISCONN''|106|Transport endpoint is already connected|
|''EENOTCONN''|107|Transport endpoint is not connected|
|''EESHUTDOWN''|108|Cannot send after transport endpoint shutdown|
|''EETOOMANYREFS''|109|Too many references: cannot splice|
|''EETIMEDOUT''|110|Connection timed out|
|''EECONNREFUSED''|111|Connection refused|
|''EEHOSTDOWN''|112|Host is down|
|''EEHOSTUNREACH''|113|No route to host|
|''EEALREADY''|114|Operation already in progress|
|''EEINPROGRESS''|115|Operation now in progress|
|''EESTALE''|116|Stale file handle|
|''EEUCLEAN''|117|Structure needs cleaning|
|''EENOTNAM''|118|Not a XENIX named type file|
|''EENAVAIL''|119|No XENIX semaphores available|
|''EEISNAM''|120|Is a named type file|
|''EEREMOTEIO''|121|Remote I/O error|
|''EEDQUOT''|122|Quota exceeded|
|''EENOMEDIUM''|123|No medium found|
|''EEMEDIUMTYPE''|124|Wrong medium type|
|''EECANCELED''|125|Operation Canceled|
|''EENOKEY''|126|Required key not available|
|''EEKEYEXPIRED''|127|Key has expired|
|''EEKEYREVOKED''|128|Key has been revoked|
|''EEKEYREJECTED''|129|Key was rejected by service|
|''EEOWNERDEAD''|130|Owner died|
|''EENOTRECOVERABLE''|131|State not recoverable|
|''EERFKILL''|132|Operation not possible due to RF-kill|
|''EEHWPOISON''|133|Memory page has hardware error|

===EINTR (Interrupted system call)===
Liste non exhaustive des fonctions pouvant être interrompues avec un code d'erreur ''EINTR'' : ''select'', ''accept4'', ''poll'', ''recv'', ''read'', ''write''.

Ces fonctions précédentes renvoient -1 en cas d'échec et la variable ''errno'' (thread-safe) renvoie ''EINTR'' en cas d'interruption.

La méthode simple est de faire une boucle autour de l'appel avec la condition ''retval == -1 && errno == EINTR''.

La méthode complète est de savoir d'où vient cette interruption système : [[http://250bpm.com/blog:12|EINTR and What It Is Good For]] {{ :lang:c:noyaulinux:eintr_and_what_it_is_good_for_-_250bpm_2019-10-17_19_28_46_.html |Archive du 05/11/2012 le 17/10/2019}}